What cultural faux pas should I try to avoid making in Los Angeles?

"In Los Angeles, it is important to be mindful of cultural differences and to be respectful of the diversity of the city. It is important to be aware of the different languages spoken in the city and to avoid making assumptions about people based on their appearance. Additionally, it is important to be aware of the different customs and traditions of the various cultures represented in the city and to avoid making jokes or comments that could be seen as offensive. Finally, it is important to be aware of the different religious beliefs of the people in the city and to respect their beliefs and practices," remarked another expat in Los Angeles, the United States.