The US Marshals generally enforce court orders, but they are part of the executive branch, managed by the Trump administration. I don't expect they will do anything that Trump doesn't want.
The feds erected a large metal wall in the street around the Portland federal building, then the local police helped harass and beat journalists and bystanders alike.
Reminds me of the song Born a Worm.
https://www.youtube.com/watch?v=qMEXBwFbdoM