That's not political. It's the truth.

I watched her do the eye colour experiment years ago, it was fascinating how quickly people were telling jokes based on peoples eye colour. You saw friends split and not stay with their friends; only one person stayed with their friend. It made me understand how hard it is for most people to make a real stand against racism and how easy it is to follow the crowd.

Zappa had a knack for the perfect phrase so often

I'm so with you, Mike.

How many people have thought far into the future when everyone will be a shade of brown?

As I've told you, it's already been co-opted by racists, so either your memory is failing or you just didn't take any notice of me.  I'm used to that though.  I've been married. 

The supporters of the Black Lives Matter movement are not "bandwaggoning the latest 'cause'" they are trying to change things for the better. If you really think that the original post (o.p.) "smacks of that tiresome phrase "if you're not part of the solution, you're part of the problem," that says to me that you don't actually know what the problem is, let alone how to find a solution. It's a stupid phrase, on that I assume we agree, and one I'd never use.  I don't think the  o.p. is something (to coin a phrase) so black and white as that.  It's showing how little importance most people actually place on racism in day-to-day situations, as long as they're white.  That's the message I took from it anyway.  It's an attempt at education, not a stark, binary, choice being issued.

If everyone takes your stance, or rather the lack of one, whereby you sit back, do nothing, and wait for people to stop killing each other and begin having "some intelligent discourse and get to the root of the problem,"  do you honestly believe that racism will just "go away"?  Or are you just waiting for everybody else to sort it out.

I was brought up to stand up for myself, and to stand up for others who are worse of then I am.  I've always been as politically active as I've been able to.  I supported the Rock Against Racism movement.  To sit back and say "it's not my problem," is anathema to me if I feel I can actually do something to effect change.  I'm only one voice, one of many though.  Nobody is going to listen to me alone, but if enough people like me try to educate people then perhaps change will, eventually, come. Racists and racism may, finally, become a thing of the past.

If people did this, and if people did that is not a valid argument, because they are very obviously not going to do those things, or they'd already have done them, or at least made more progress in those directions.  If I were Prime Minister I'd introduce much stricter laws on racism, and give the police more powers to enact them.  It's a lovely thought (to me anyway  ) but it's not going to happen, so my only path forward is to work within the system to change the system.  I do what I can.  It's very little in the scheme of things, but it's still better than nothing.  I have no right complain about something if I'm not prepared to raise my voice against it.

Mere semantics, as you well know.

"It's not racist and only the most moronically imbecilic creatures could appropriate it to have racist connotations..."  Because, as we all know, most racists are highly-educated and literate people, so it would never happen.   Of course they're going to seize on it, and any other phrase they can pollute.

You have your opinion.  I'll stop trying to explain why I think it's wrong.