Considering the behavior of ICE, it seems like they hired some folks just desperate to find legal cover to shoot someone. There are numerous videos of them casually drawing their weapons on protesters.

https://www.reddit.com/r/ICE_Raids/comments/1q7u4kz/ice_agen...

https://www.reddit.com/r/minnesota/comments/1q7y43s/cbp_poin...