Because if they lie they will eventually be found out & it won’t go well for them.
I understand the anger, but I do not at all find the trashing, burning, & looting of businesses anything other than anarchy.
Some drop the veneer of civilization very quickly.
Our area’s largest city retail storefronts still have not recovered from the riots of the 1960s.
Now we live in the age of on-line shopping.
With diversity you just can’t have nice things anymore....