Misleading title...
It said "Kill Everything White in Sight" not Kill Ever White in Sight. Context.
That means they're going to be shooting up white walls, white cars, white socks, heck even anything white in their own homes.
I'm suddenly remembering the time on the old 70s SNL when a nutty play director went to a men's prison in Utah and wanted to recruit inmates for parts in a musical play. He wanted to put on the play "Gigi." Several of the inmates came out in striped pajamas and had the most interesting conversations and auditions for different parts. (Of course, the inmates were all played by guys who were Not Ready For Prime Time Players ;). One of the most interesting inmates was played by Garrett Morris, an inmate who had been kept in solitary for years, because he was too dangerous to keep around the others. He came up with a musical number that is as follows:
https://www.dailymotion.com/video/x2x6ck8
At least with him it's funny, and describes the mentality of BLM sooooo well.
he mumbled it in the beginning, maybe he wasn't the best speaker
i'm sure he's a good dude just wrapped up in the situation