Taking a knee is one avenue to fight the horrendous tidal wave of racism we see. There are lots of other ways, too. We need to take every single avenue we can.
Any weird comments about virtue signalling and woke ness seem to come from social media & the strange terminology used on there. For those of us not on social media it is much more basic:
racism is disgusting, there is no excuse for it, we fight it together on all fronts, we help each other, we take collective responsibility for it, and that's it.
I'm a PT but also do some coaching in other sports (won't say details as it's outing) but where I live and what I coach means most of my athletes are from racial minorities. It's been an education and very eye opening and it's very upsetting to say but as a white person the brutal reality is yeah, my life matters more to a lot of people when I look at how some of my athletes have been racially abused in front of me, experiences with the police, etc. I don't want people to think my life matters more but genuinely you can't work for years doing what I do and seeing these things and not be upset by it.
On social media it seems to be treated in a weird way but here how I see it, it's an affront to everyone in my view. Noone tried to persuade me to think what I think, it's just casual observations over time and it's shaming of us as society.