After being expelled for publicly criticising Communist Party tactics during the March Action, he joined the Independent Social Democratic Party and, when this party merged with the Social Democratic Party, he became one of the leaders of its left wing.
After being expelled for publicly criticising Communist Party tactics during the March Action, he formed the which in 1922 merged with the Independent Social Democratic Party. This party, in turn, merged with the Social Democratic Party a few months later and Levi became one of the leaders of its left wing.