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

"It is important to be mindful of cultural norms when visiting Bangalore. It is important to dress modestly and to avoid public displays of affection. It is also important to be respectful of religious customs and to avoid taking photographs of people without their permission. Additionally, it is important to be aware of the local language and to avoid using offensive language. Finally, it is important to be aware of the local customs and to avoid making assumptions about people based on their appearance or background," said another expat in Bangalore, India.