Sikhs wear their turban as a sign of respect to god and to show commitment to their values. Normally it’s a requirement to wear it 24/7 (those in the Khalsa must wear it), but some people don’t wear it because of hate, order to fit in, and other reasons. But you are right Sikhs do not cut their hair.
Sources: Sikh Coalition and Wikipedia link about turbans from various religions
(Sorry couldn’t post links)
Sources: Sikh Coalition and Wikipedia link about turbans from various religions
(Sorry couldn’t post links)