No contradiction here. BLM protests exclusively for criminals regardless of skin color. Did you ever see them protesting for the unjust death of David Dorn? Link for reference although any search engine will tell you who he was.

https://www.stltoday.com/news/local/crime-and-courts/a-year-after-his-shooting-death-retired-st-louis-police-captain-remembered-as-a-man/article_cf4b873f-3257-5342-9bfe-7baa4439f71c.html

The answer is no. However, I bet they might protest if his killers get convicted assuming they ever find them. And to be clear, protest in support of those poor innocent mostly peaceful cold blooded murders.