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

"In Woodlands, it's important to respect the multicultural society, which includes Chinese, Malay, Indian, and Eurasian communities. Avoid making any derogatory comments about any race or religion. When visiting religious sites, dress modestly and follow the customs of that particular place. For instance, remove your shoes before entering a mosque or a Hindu temple. Public displays of affection are generally frowned upon in Singapore, so it's best to avoid excessive physical contact in public. It's considered rude to point with your foot or to touch someone's head in Singapore, as the head is considered sacred and the feet are seen as dirty. Chewing gum is banned in Singapore, so avoid bringing it into the country or chewing it in public. Littering is taken very seriously in Singapore, with heavy fines for offenders. Always dispose of your trash properly. When eating, remember that some Singaporeans, especially Malays and Indians, eat with their hands. However, they always use their right hand, as the left hand is considered unclean. In conversation, avoid discussing politics or making negative comments about the Singaporean government. Freedom of speech is somewhat limited in Singapore, and such comments could potentially get you into trouble. Lastly, always stand on the left and walk on the right when using escalators in Singapore. This is a common courtesy that allows faster walkers to pass," remarked another expat who made the move to Woodlands, Singapore.