A database compiled through investigations conducted in 2018 by the Guardian and the Undercover Research Group network of activists shows that undercover police officers spied on 124 left-wing activist groups between 1970 and 2007. The police infiltrated 24 officers over that time within the Socialist Workers Party, which, with a membership of a few thousand, advocates revolution to ablish capitalism. Four of these undercover officers began sexual relationships with deceived female members, and…