I can't find an original source on the first one. To my eye it is ambiguous in the sense that he does appear to be taunting the officers or otherwise engaging with them. I may be mistaken here but without larger context it's hard to say. Taunting or insulting law enforcement is not a crime and does not warrant the notice of officers, much less confrontation or pursuit or detention. But what we are talking about here is whether people are in danger simply walking down the street.

There is a line where this becomes truly frightening behavior; where you have to keep your head down and avoid eye contact because they might fly off the handle for no reason, like crazy homeless people on the subway but with badges. So far I haven't seen anything approaching this.

The second one is [1] Jacelynn Guzman, age 23, who was mistakenly identified as part of a targeted immigration enforcement action. She fled the scene after agents approached her and identified themselves. A suspect who flees is likely to be chased -- this does not seem strange or off-putting to me at all. I think notable, for what its worth, is that they did not ask her father for ID or question his citizenship in any way; they were there for a targeted operation and he was not the target, so they left him alone while they attempted to verify the identity of the suspect that they were targeting.

[1] https://www.nbcnews.com/news/us-news/video-shows-masked-bord...