To her, the “black community” has been silent about the Hamas atrocities in Israel and the nearly worldwide protest marches in favor of Hamas/Gaza/Palestine. I suspect she means that her left-leaning black acquaintances have been mostly silent.
Yes, the more conservative black people are NOT silent. But too many, both black and white, sit silently looking at their shoes and saying, “Well, I can’t do anything about it!” while these atrocities rage on. They may cringe but they do so silently, still supporting the despots because they themselves are snookered into “holding the cloaks” of those who actually DO the violence. And it is truly a moral failing–an act of moral cowardice.