<<can’t assess>> No, it’s very difficult a lot of times. Trolls are very, very good at what they do. I don’t think it’s an accident that trolling, clickbait, fake news and alternative facts have reached such prominence at such a professional level.
I find, however, that following relatively non-controversial topics such as cookies, knitting, crafts, and thousands of others keeps the most common trolling questions to a minimum in my feed. I suppose a war could break out over what’s the best chocolate chip cookie, but since virtually all chocolate chip cookies are delicious, nothing much happens except people find new recipes that sound good.