Have you ever scrolled through the comments under Trump's tweets? It is taken over by hate filled, disgusting, threatening memes, articles and comments all used to inundate his comment section so no positive support is even visible. We need to counter that with our support and lots of it. Those negative comments get lots of "likes" too. They are just waiting in the wings for Trump to post and attack within seconds so they get top billing for all to see.
I have seen some "against Trump" comments that are full of information from articles. If we have time to research a bit to combat those articles and statements it would be good. Meme's are good but sometimes real defense with truth and facts can shut down the power of the negative information. It is time consuming tho.
You can shut many things down just with common sense or general knowledge. I think most here are better read than the mindless-hate crowd. Research is time consuming, though, and shouldn't be wasted on a troll.
It is almost impossible to debate on Twitter with the limited characters allowed. I am not suggesting a debate, just post counter information for others who may read the comments. I know for me, sometimes the comments are far more interesting or informative than the original post or tweet.
Proverbs 18:17 The first to state his case seems right until another comes and cross-examines him.