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

"It is important to be mindful of cultural differences when visiting Tel Aviv. It is important to be respectful of religious customs and to dress modestly when visiting religious sites. It is also important to be aware of the local customs and to avoid public displays of affection. Additionally, it is important to be aware of the local language and to avoid using offensive language. Finally, it is important to be respectful of the local culture and to avoid making negative comments about the country or its people," remarked another expat in Tel Aviv, Israel.