>I fixed my twitter feed by unfollowing anyone the first time something they did resulted in me being upset.
I'm not sure this is a good thing. I agree that you shouldn't be constantly hammering yourself with upsetting things but I don't think the polar opposite of avoiding anything you disagree with or get upset about it mentally healthy either. I think this could lead to you just being overly sensitive to anything that makes you a little emotional. Although, maybe you get enough "disagreement" in you regular life to balance it out.
The best option is to learn how to better deal with you emotions. For younger generations that aren't going to be able to avoid social media as well this might be the only option for them since that IS their entire social interaction in many cases. It's definitely harder though and the way social media berates you constantly maybe our minds aren't able to handle such a barrage.