The bigots from Black Lives Matter do NOT speak for all black people like they THINK they do. And like the intentionally divisive hatemongers of the American media WANT people to think.
Black Lives Matter is a collection of Racists of Color who often act like a hate group like the Ku Klux Klan. Only bigots like the privileged white children of Antifa and the members of Black Lives Matter would have a problem with people saying ALL LIVES MATTER. Because, you Rednecks of Color, ALL LIVES MATTER! Deal with it!