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The First Thatcher ministry (Conservative Party) elected in May 1979 had instituted new powers for the police under the Vagrancy Act 1824 to stop and search people based on only a 'reasonable suspicion' that an offence had been committed – hence their common name of "sus laws". These were applied disproportionately to the black community, and caused widespread resentment amongst young black men. The majority of these were not immigrants; they were the British-born children of immigrants, mostly born in the late 1950s or the first half of the 1960s (Baby boomers).