gravity - Why don't black holes within a galaxy pull in the stars of the galaxy?

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If black holes can pull even light, why cant they pull the stars in the galaxy?

Answer

Why would you assume they do not ? Of course they do. But as you probably know, the gravitational pull decreases with distance (inverse square law). From a safe enough distance any other object (star, galaxy) would feel the normal gravitational pull of an object of the black-hole's mass at that distance; it makes no difference to the stars if the source is a black hole or anything else.