I like cops, but I have problems with those that follow these kinds of orders. They could have easily just kept on walking and not done the dictators bidding.
Their California boss was likely watching the arrest / sent the California cops into the ocean / the cops would likely have been fired if the cops did not follow their orders.
Port of Seattle Police Officer and Special Forces Veteran Greg Anderson was fired after his video about police officers abusing their power went viral.
https://freerepublic.com/focus/f-news/3844217/posts