The Black Lives Matter movement was born of the Michael Brown shooting in Ferguson, Missouri. While the BLM founders started their organizing after the prior Trayvon Martin case, it was Brown and Ferguson which launched the BLM movement into the public spotlight through the protests and riots in Ferguson.
Nothing was more associated with the BLM movement than the chant "hands up, don't shoot," based on the narrative that Brown had his hands raised and said 'don't shoot' when shot. That same chant drives protesters and rioters ripping up cities after the George Floyd killing.