I am at my wits end as I regard lying as not only a sin, but something that is very dangerous to both a society and very core of the relationship between humans.
A lie can be betrayal of trust. And to betray trust is a work of hate. So, it can be a big problem, indeed.
I am not talking about innocent white lies or those necessary in war or conflict, but the fact that they have become so common, that so many are never called out and there are no consequences.
Well, in the United States, to me it seems possible that this country is in a state of political civil war. And lying is indeed a tactic of war.
People are smeared and the very concept of truth itself is under attack, so what obligations do we have as Christians to call out this behaviour?
Most of all, make sure you are being a good example of how to love, how to be honest, caring, sharing as family in Jesus. And what can help with this is to make sure you are not involved with anti-love things >
unforgiveness
arguing and complaining > Philippians 2:13-16
beauty discrimination > God is no respecter of persons > note what happened when Jacob discriminated by loving Rachel more than Leah because Leah was not beautiful like Rachel >
"When the LORD saw that Leah was unloved, He opened her womb; but Rachel was barren." (Genesis 29:31)
And yet, now we see girls feeling less desirable and less lovable because they are less beautiful. Also, men are fools for attraction mainly because someone is more beautiful looking > they do not know how to love. And even minority victims of racism themselves can practice beauty discrimination . . . with men getting crazy about women just because of how they look and act charming. And so, so many do not know how to love; and then they fall apart in their deep weakness so they can do crime, adultery, drugs, and be unforgiving. Plus, some number of adults fear older age because they feel they will not be so beautiful and handsome > their beauty-favoring culture has ruined them from how love would have them looking forward to maturing in how to love so then they can be good examples for younger ones.
All these things started in the home, more or less. So, then kids do not have an example of how to love; then they can go on to do all the lying and other anti-love things which get so much blame . . . when we need to start at home and prevent the later developments. Fighting the end-product does not work so well as starting children right, at home. God uses prayer, example, and His word.
And the most difficult, what are we to do when other Christians are spreading them or actively supporting people who do?
Well, if you believe "Christians" are voting for a liar . . . the "civil war" lying can be on both sides. What you might do, in some instances, is stop lying to yourself!!
I mean, telling yourself that you are reliable for getting the right information . . . when in fact you are not an expert to know which sources are really giving you the truth > you do not personally know the sources; we are not God to know the real truth about people.
Assuming can be a way of lying to your own self >
"Test all things; hold fast what is good." (1 Thessalonians 5:21)
I believe God's word means for us to make sure with Him who knows what is "good", all the time, with "all things". Only God knows what is really good; so we need then to make sure with God, all the time. Or else, we could be fooling ourselves, supposing we have the ability to know who is telling us the truth . . . when we do not even know these different people.
You might feed on what happened in Joshua chapter nine > how the Gibeonites rigged evidence to be so obvious, that the Jewish leaders judged by the evidence, "but they did not ask counsel of the LORD."
They did not make sure with God. They thought lies, I would say. Who had them thinking what was not true?? So, I would say make sure with God about whatever comes to your mind and your perception. Many are not thinking the truth - - in deciding who to date and marry, among other items. Ones do not make sure with God. And there can be thinking which is telling them not to make sure with God; who has them thinking such a thing > supposing that our own Heavenly Father wants to be so distant from us, that we must depend on ourselves to make certain decisions??
And meanwhile, we can be pointing our finger of blame elsewhere.
Not raising their voice when they see other Christians are being lied about, both personal and in general?
Like I offer > you have to know someone pretty well, to know if it really is a lie about that person. If you know the person well enough, yes stand up for the person. However >
"He who answers a matter before he hears it,
. It is folly and shame to him." (Proverbs 18:13)
Was not this what we were warned about, both in the Bible and throughout history, notably in the last century where Christians were persecuted by two totalitarian ideologies in Europe where one of them alas also spread to parts the rest of the world?
There are people who claim to be Christians, but they are using this for military and political power and material gain. And in case they do this, they can attract the attack of ones competing for what these actors are seeking. So, not all the lying and persecution is against the innocent. Christian ideology has been used by Southern cotton growers, to justify slavery. Also, ones claiming the Bible invaded sovereign lands and killed even mothers and children of Native American villages, in order to take their lands . . . though it is clear we are not to covet what is our neighbor's. And people on this earth still include ones with character to do that sort of a thing, whether they use a Christian cloak or some other disguise.
So - - can you tell the difference?

If you can, then you can not be fooled into marrying someone who does not know how to love.
"And this I pray, that your love may abound still more and more in knowledge and all discernment." (Philippians 1:9)
In God's love all-loving and gentle and kind we share with Him in His ability to tell the difference, and He shares with us His own creativity for how to love any person.