What I think is worth 'overcoming' is a sentiment that if one disagrees with the goals of blacklivesmatter organisation it shouldn't mean he/she is racist, insensitive etc.
I work for a company from USA and I have been 'outed' for not sharing black lives matter hashtag and whatnot, I don't feel I can safely say that I disagree with some points - I talked to handful of people privately and I met with literal outrage. I think this is really problematic.