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

"It is important to be aware of the customs and culture in Tijuana before visiting in order to avoid making a cultural faux pas. It is considered disrespectful to talk about politics or take photos of people without permission. Additionally, it is generally best to dress conservatively and avoid swearing in public. Furthermore, be sure to pay close attention to behavior that is acceptable in public settings; for example, refrain from showing affection in public and address authority figures with respect. Above all, be respectful and courteous to those around you," said another expat in Tijuana, Mexico.