heck·le 
/ˈhɛkəl/ verb
heck·les; heck·led; heck·ling /ˈhɛkəl/ verb : to interrupt (someone, such as a speaker or performer) by shouting annoying or rude comments or questions [+ obj] ▪ Several protesters were heckling the speaker at the rally. ▪ The players were being heckled by the fans. [no obj] ▪ People in the crowd were booing and heckling as she tried to speak.
— heck·ler /ˈhɛklɚ/ noun, plural heck·lers [count]
▪ There were several hecklers at the rally.
/ˈhɛklɚ/ noun, plural heck·lers [count] ▪ There were several hecklers at the rally.
— heckling noun [noncount]
▪ She was upset by the crowd's heckling.
▪ She was upset by the crowd's heckling.
