Terrorist? Interesting question...here is a bunch of information, open source intelligence. Make what you will of it, but it is...highly suspect to say the least.
If you check out the 'main' BLM site (blacklivesmatter.com) you can find connections (IP communication) with many interesting sites from across the globe.
Now it's no surprise you see your typical anarcho/antifa and progressive activistim of itsgoingdown, mayfirst, or indymedia, etc. But it gets more fun than that...
You got anti-israel BDS movement (BDSmovement.com); and B'Tselem who are a nonprofit that "works to end Israel’s occupation in acknowledgment of the fact that ending the occupation regime is the only way to forge a future" (btselem.org)...
malaysian "democracy" activism (globalberish.org)
Syria? Ok, you have Syrian news (?, 7al.net); and you have 'newsyrian.net' (The New Syrian Army aka Revolutionary Commando Army) and 'all4syria.info' (news?) which are part of the Syrian Opposition...
And I'm saying 'collusion' yet but...What about activism in eastern Ukraine (donbasssos.org)? Which is hosted out of Donetsk which, from wiki: "Since April 2014, the city has been controlled by pro-Russian separatists from the self-proclaimed Donetsk People's Republic." A bit strange...but then again not as odd as Fergana News (fergananews.com) which is a russian news org aimed at the ex-soviet Steppe countries and known for it's...questionable bias, as in Pro-Russia. A few years ago Kyrgyzstan banned the site for its pro-russia, anti-Kyrg "nationalism/independence"...and it definitely panders towards some schools of what might be called "Russian Neo-fascism" (ala Dugin) with it's Eurasian Union style mentality...
There are many more. The rabbit hole goes deep; there's juicy non-profits and progressive agencies. Latin America, Korea, and on and on. If you want to look, here. That is a way to see a basic view.
Not all of these are "bad", and BLM probably didn't start with them, but, at this point, to have these kinds of ties connecting to a group of IPs talking to each other, beyond just BLM...something is...well it's a bit odd... Useful idiots? Spy games? Cyberwarfare? Nation state backed "provocation"...or does the money come from elsewhere? Communist uprising? Money Laundering? Disinformation? ??????
It may be nothing but I wouldn't take that bet.
(this type comment has received much...flak shall we say, in the past. Ban, deleted, pms, etc. so we will see how it goes.)