I don't know the identity of this person or where you are finding this blather but I had a Facebook "friend" who sounds just like what you are talking about. This woman has about 3,500+/- followers and runs a blog. She is rabidly anti-Trump and she professes to be a Christian. Of that, I cannot speak but what I have seen of her behavior and speech, publicly, as she has slandered people and has not to my knowledge repented, I am not convinced of her profession. She refuses correction and leads her followers to hate Trump. I have unfriended her to avoid seeing her disgusting blather. That is an option that you have too Tom. Unfriend or block people like this. Why continue in their "fellowship" and by your friendship with them, encourage others to remain in fellowship as well.

Scripture tells us to pray for those in leadership and reasons for why and how we should pray.

1Tim. 2:1,2 I exhort therefore, first of all, that supplications, prayers, intercessions, thanksgivings, be made for all men; for kings and all that are in high place; that we may lead a tranquil and quiet life in all godliness and gravity.;

Psalm 22:28 For the kingdom is Jehovah’s;
And he is the ruler over the nations.;

Prov. 28:2 For the transgression of a land many are the princes thereof;
But by men of understanding and knowledge the state thereof shall be prolonged.;

Eph 6:12 For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world-rulers of this darkness, against the spiritual hosts of wickedness in the heavenly places.

The Chestnut Mare