peace-breaker
/ˈpiːsˌbreɪkə/noun
A person who violates peace or stirs up strife; a disputatious or quarrelsome person; a person who commits a breach of the peace, a violator of public order.
Origin
Mid 16th century; earliest use found in William Tyndale (c1494–1536), translator of the Bible and religious reformer. From peace + breaker, after peacemaker.