In this video, we can see two incidents, yes you can say they are anecdotal, or don't represent the movement as a whole... but there are literally 100s of videos just like these. Of BLM agitators (they are not protesters) harassing and assaulting bystanders.
As the man points out... screaming at an elderly couple, cursing at them and smashing their dinner is not what people seeking justice do - this is what people filled with hate do.
Always remember who it is that has financed and promoted this hate group.