(ROUGH CUT ONLY - NO REPORTER NARRATION)<br/> Poles commemorate the 30th anniversary of the imposing of martial law on midnight December 13, 1981.<br/> Several hundred people gathered outside the home of former communist leader General Jaruzelski in Warsaw to remember his government's crackdown against a growing wave of pro-democracy protests.<br/> Protesters waved Polish flags and read out names of people killed by communist security forces after martial law was imposed.<br/> Jaruzelski, who took the decision to imprison key democracy activists and send the military into the streets, is in hospital where is having chemotherapy for lymphoma.<br/> In his defense, Jaruzelski has claimed that the move to impose martial law was a measure aimed at preventing military intervention of Russian and Warsaw Pact countries, such as in Hungary in 1956 and Czechoslovakia in 1968.<br/> A number of events are planned in Polish cities to mark the anniversary, including a march organised by opposition leader Jaroslaw Kaczynski against Poland's involvement in tighter EU integration.