@mekkaokereke @freequaybuoy thanks from another white Brit. I'd heard of COINTELPRO but don't know much about it. Shall watch those links.
I am sure it's still going on, both in the USA and UK. I know here we've had recent controversy over our intelligence services lying and cos it was majority white middle class people, it's got traction. Despite black campaigners like Doreen Lawrence having been phone tapped etc and pro Palestine groups getting loads of shit.