"why were they not called out when the burned and looted Ferguson, and killed/ incited murdering police?"

Well, for starters, because they did neither of those things:
BLM didn't promote the killing of police officers and decried the rioting as well. The Dallas shooter wasn't a member and was thoroughly denounced. Antifa is definitely violent and deserves to be taken to account. They are still not even close to the white supremacists in terms of either rhetoric, action, or ideology. You're engaging in false-equivalence, whataboutism, and god knows what other fallacies.