How many letters does the top answer for “shouting to interrupt a speech with which you disagree” have?

The most common answer is barracking (10 letters).

Crossword clue: shouting to interrupt a speech with which you disagree

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

barracking 10 letters wn-def

shouting to interrupt a speech with which you disagree

heckling 8 letters wn-def

shouting to interrupt a speech with which you disagree