content: I think they arrested a Muslim and a Quebecois, but they let the Muslim go after realizing he was a witness (all allegedly). Based on the information available it seems like it was probably a white guy who did it, but, ahem, the motives are unclear. There was a BLM shooting where a white guy went to a protest with a gun and made statements that he intended to kill people, and then actually shot five black people. He was just indicted or sentenced today or a few days ago, as I recall.