New Delhi, June 16 -- Tens of thousands of people marched through the streets of the Italian capital in anti- and pro- migration demonstrations Saturday, after a far-right citizens' initiative seeking sweeping measures against migrants garnered enough support to be brought to Parliament.

A petition by the initiative, named "Remigration and Reconquest," gathered the 50,000 signatures needed to trigger parliamentary discussion, pushing the once-fringe concept of "remigration" into the political mainstream. No date has been scheduled yet for a vote.

The proposal, promoted by right-wing groups, calls for sweeping measures targeting foreigners, including coercive returns, incentives to leave Italy and broader policies critics say could exten...