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

"In Denver, it is important to be respectful of the local culture and customs. It is considered rude to talk about religion or politics in public, so it is best to avoid discussing these topics. Additionally, it is important to be mindful of the local dress code and to dress appropriately for the occasion. It is also important to be aware of the local laws and regulations, and to respect the rights of others. Finally, it is important to be respectful of the local environment and to avoid littering or damaging the natural environment," remarked another expat who made the move to Denver, the United States.