Well put. I could write a 500-word post attacking Marco and all Hillary supporters for this behavior, but that's not going to change any minds.
We're much better off scrutinizing ideas rather than candidates who frequently change their ideas based on who's listening or their chances to get into/hold onto office.
I'm not sure that's true. Trump is a narcissist who wants to be loved. He's not trying to be hated.
What these posts do is create or reinforce cultural and political divide in a very ugly way. The message is that if you're a Trump supporter you're immoral and because you're immoral there's no way to compromise with you. The author may get brownie points from other members in his bubble, but his attitude is destructive and should be stopped. All you're doing is incentivising lying about political beliefs and further radicalizing conservatives.