The Marines are doing exactly what they were sent to do - protect federal property and personnel from violent mobs attacking lawful immigration enforcement. The UPRISERS Act (H.R. 2273) makes clear that foreign students participating in riots face immediate visa revocation and deportation.
These aren't "protesters" - they're coordinated agitators assaulting service members guarding facilities like the Wilshire Federal Building. When DHS reports 33% of arrested rioters last week held F/J/M visas, it proves the system's being exploited.
The alternative? Letting anarchists burn cities while bureaucrats wring their hands. Every Marine on that line represents order against chaos.