Should they?
Christians pray for their elected officials (and their political appointments) all the time -- should non-Christians be permitted to do the same?
Isn't there an important difference...
between "praying" (well-wishing, hoping) for good benefits to people...
versus "hexing" (ill-wishing, hating) for bad maladies to people ??
Helping your team is not the same as harming the other team.
Invoking non-human, non-terrestrial, other-worldly astral powers from the stars, to inflict damage, destruction, wounds, casualties & death on earth...
is not the same as invoking supra-natural, supra-terrestrial influences to heal, help & save people upon this planet.
Rather, the two behaviors are on opposite sides of the same "super-natural coin" so to speak. Invoking the super-natural for good on earth is not identical to invoking the super-natural for ill.
-----
There may also be an issue of hypocrisy. Modern pagans always claim that Christian persecuted them and burned them at the stake. Yet, evidently, give them half a chance... and they will (more or less) do the same thing, making effigies of people they don't like and burning them, in hopes that sympathetic voodoo-like magic will inflict burning on the targets.
So, evidently, (some, black-magic practicing) pagans do not claim persecuting people is bad, rather it's good, when they are the ones persecuting.
In case anyone cares, this would imply that (say) "two wrongs make a right"