It's interesting to me that submissions like this routinely get a dozen or so upvotes very quickly, on what is transparently a very politically inciting headline promising a contentious political editorial.
"including US citizens" is weasel wording here. ICE operates on reasonable suspicion, as they are legally entitled to do. Furthermore, they are federal LEO, and as such may arrest people they know to be US citizens if those citizens commit federal crimes.
This is all quite clear in the law, and even reported by left-wing sources in the same breath that they claim the footage contradicts things that I (from watching it myself) believe it reasonably supports (subjective rhetoric aside). In particular, the victim in the recent case was "blocking the path of an officer’s vehicle", which the SF Chronicle explicitly calls out as valid cause for such an arrest.
LEOs tend to shoot at those who resist arrest in a manner that endangers their lives. That endangerment is not required to be itself an attempt at murder.
The other thing I find interesting is that the officers were not masked in this case, contra the usual narrative.