Red Line
... that after a 1968 split in the Communist Party of Italy (Marxist–Leninist), the Black Line and Red Line groups would engage in reciprocal acts of violence and vandalism?
... that after a 1968 split in the <a href="./Communist_Party_of_Italy_(Marxist–Leninist)" id="mwBEQ" rel="mw:WikiLink" title="Communist Party of Italy (Marxist–Leninist)">Communist Party of Italy (Marxist–Leninist)</a>, the Black Line and <b id="mwBEU"><a href="./Communist_Party_of_Italy_(Marxist–Leninist)_Red_Line" id="mwBEY" rel="mw:WikiLink" title="Communist Party of Italy (Marxist–Leninist) Red Line">Red Line</a></b> groups would engage in reciprocal acts of violence and vandalism?