What do Sikhs and Hindus feel about poor behaviour from Muslims, being attributed to Asians, when it is due?

Condemning an entire group of people, whether it's an ethnic origin (Asians) or a religious group (Muslims), for something that A FEW (obviously sick) people are doing is wrong. I can't understand why someone could condemn one without also condeming the other, since it's the same bigoted nonsense.