I think it may be worth getting involved when the hate comes from misinformation or disinformation, but how you respond matters. Do so from a place of empathy. Give them the benefit of the doubt. Kindly correct or inform them, and how they respond will tell you their intention and where their heart's at.
If you're going to escalate the situation by attacking their favorites or resorting to other vile tactics, it would just make things worse and defeats the purpose. It might even hurt you in the long run.
