So you can't actually say what words of his condoned murder? You've seen and quoted his words at least twice, but you seem to be unable to point to the exact phrase because they don't exist.
First Amendment rights can be violated and it appears that Dowd's have been by the government punishing him for private, protected speech.
That doesn't follow. You lack a good understanding of the issue: for instance, in an at will employment state, an employer can fire you for no reason, but not for an illegal reason such as race, sex, ethnicity or religion. Public employees can be fired for many reasons including insubordination but not for their speech off the job (with certain exceptions).

Maybe try to understand the point being made before dismissing it out of hand?