Polish abortion rights proponents, most of them women, marched Wednesday in Warsaw and elsewhere in Poland to express their opposition to a proposal in parliament to further tighten the country’s already restrictive abortion law.

Hundreds took part in a march in Warsaw. The turnout appeared far smaller than similar marches that mobilized huge crowds in 2016.

The march, organized by a group known as the Women’s Strike, came after lawmakers voted recently to refuse to consider a proposal to liberalize the abortion law and moved forward with a separate proposal to tighten the law.

Abortion is illegal in most cases in heavily Catholic Poland, and some conservative lawmakers are seeking to restrict it further.