Because they are Jew-hating leftists and have bought into the Nazi propaganda that Jews are rich and therefore are automatically the oppressors of everyone else.
These protestors have been brainwashed to hate Jews, just like Palestinians teach their children hate the Jews.
The students have no concept of the real truth about Islam, Hamas, Hezbollah and Palestinians. They had a two-state solution in the hands with Israel. All they had to do was formally recognize Israel’s right to exist. . . they refused and have continued intermittently attacking Israel ever since. They richly deserve what they are getting from Israel because of their evil behavior and for putting Hamas in charge of what government they have. Israel, finish the job of wiping out Hamas because it is the right thing to do.