Following the Peterloo Massacre on 16 August 1819, the government of the United Kingdom acted to prevent any future disturbances by the introduction of new legislation, the so-called Six Acts aimed at suppressing any meetings for the purpose of radical reform. Élie Halévy considered them a panic-stricken extension of "the counter-revolutionary terror ... under the direct patronage of Lord Sidmouth and his colleagues"; some later historians have treated them as relatively mild gestures towards law and order, only tentatively enforced.