heckling

ˈhɛk(ə)l

verb

interrupt (a public speaker) with derisive or aggressive comments or abuse.

he was booed and heckled when he tried to address the demonstrators

jeer,taunt,jibe at,shout down,shout at,boo,hiss,disrupt,interrupt,harass,shout catcalls at,barrack,give someone a hard time