https://www.cnn.com/2019/07/13/us/armed-man-killed-tacoma-immigration-facility/index.html

'Police said the man set a vehicle ablaze in the center's parking lot and attempted to ignite a propane tank with a flare to set the building on fire. Officers called out to the man and shots were fired, according to a police statement. It's not known whether the man fired on the officers, Cool said.
The gunman died at the scene; four officers involved in the shooting were placed on administrative leave per department policy. The incident is under investigation.'

No evidence of ANTIFA involvement; merely an unjustifiable attack on a detention center. The police actions appear to have been justified.

End of FACTUAL story.