“violence / violent” in Japanese is 暴, read bou, baku, aba (ぼう, ばく, あば). It is a Grade 5 Kyōiku kanji, taught in year 5 of Japanese elementary school, and appears in words such as 暴力 (violence).
What does 暴 mean?
暴れる犬をとめる。
Same sound, different character — the classic trap. Compare them side by side: