Where I worked Mexicans who spoke perfect English would carry on conversations in Spanish in rooms with English speakers. Quite rude.
I have often walked in on political discussions at my local bodega. Because I don't look hispanic they went on thinking I couldn't understand the language. Sometimes I leave without saying anything. A few times though, I couldn't help myself when they were ragging on the country. I would let them ramble on until I was ready to leave and then in perfect Spanish, I would tell them what to stick in those dark private places and what they could do with themselves. After they swam back where they came from of course.
The ones I worked with made a point of it. They also refuse to address people properly, Robert became Roberto, Charlie became Carlos. It was entertaining to these clowns to tweak the Americans they worked with. They constantly talked loudly about how lazy Americans are. I told them "my people were building space shuttles and his were cleaning terlets. Ha ha.
By the way, Charlie was 260 lbs and didn't want to be Carlos so that ended quick like.
Regards