No, you do NOT understand.
BLACK LIVES MATTER is a movement to change the Status quo, which has demonstrably been BLACK LIVES MATTER THAN WHITE LIVES .
No, that'd be you that doesn't understand
BLACK LIVES MATTER is a movement to push racial intolerance, where one race (black race, in this instance) is to be treated with hypersensitive rhetorical gloves, and anything that doesn't support that notion, must be a racially intolerant. That is the definition of racist. Simply swap black for white to note how spot on that is
There is no slogan of White lives matter. The counter is that ALL LIVES MATTER is in ALL LIVES MATTER.....BLACKS, BROWNS, WHITES, LAVENDER. It's the concept that MLK embraced, where people are judged by their character, not skin color, and if still alive, would have probably killed himself in witnessing how his movement has been turned completely polar opposite by race baiters & hustlers