The problem is that protesters are often delusional and don't understand complex problems. The civil rights protests were very carefully and accurately led by MLK and this very careful narrative to educate white people was indeed successful.
But the obvious hint is at the student protests about Palestine. That's one of the bad protests. First, it targets only Israel without laying any blame or responsibility on the Hamas (which started this specific conflict and is still holding civilian hostages). This also targets the entire country instead of the current leadership, which again is a bad target. The result of these protests is obvious from miles away:
* The Israeli right gains power and becomes more aggressive - they use the protests to show how everyone hates Israel and there's no point in trying to satisfy the "antisemites" and the idiots.
* Trump gains power - Biden can't control these people... He will make matters worse for the Palestinians.
* Hamas is emboldened - they are the reason Palestinians don't have a state (which Israel offered twice to two separate Palestinian leaders).
* Putin and Iran are emboldened by the weakness of the West.
I understand why people are protesting. They want to help and have good intentions, they are also deeply misinformed (e.g. the UN just updated its casualty statistics which were VERY wrong and are probably still pretty far off). Also the Israeli government is indeed terrible, but Hamas is even worse. Uninformed protesters like this are making things worse for the moderate Palestinians and Israelis.