It's normal that some people would not approve his return as Emir while some wouldn't; hence it's nothing out of the ordinary. Provided they didn't stone him or cause any sort of disturbance of dire consequences then it's not a problem. Everyone would've love him.
“Police warn as residents boo Emir Sanusi, Kano governor - Premium Times”
“Police warn as residents boo Emir Sanusi, Kano governor - Premium Times”