Impeding law enforcement officers of ICE from performing their duties is actually illegal. It's a crime. Attacking an ICE officer is a crime. Note how the people just protesting and not engaging in impeding activities or attacks, do not get arrested.
I think it's honestly more of something that's political & most businesses have a don't bring your politics to work policy. Tampon Tim nickname is highly recognized as a political joke - ergo, it's not safe for work.