Properly understood, there is no contradiction between these two slogans. We say BLM to recognize black lives are threatened.

One of the things we need to confront is many whites' feelings that their own lives don't matter. This country will not be able to be saved without the psychologists.

Imagine someone says "We must save the rainforests" and another one comes and says "ALL forests are important" Thats ALM in a nutshell