Hundreds of demonstrators filed into the Louisiana State Capitol a day after lawmakers passed a strict new abortion ban that Democratic Gov. John Bel Edwards has signed into law.

Planned Parenthood protesters hold a "stand-in" at the Louisiana Capitol, in opposition to legislative passage of a bill that would ban abortion as early as six weeks of pregnancy, on Thursday, May 30, 2019, in Baton Rouge, La. (Photo: AP)

Many on Thursday wore bright pink T-shirts reading "We Stand With Planned Parenthood" on the front and "We Won't Back Down" on the back, in protest of the so-called heartbeat bill. The measure bars abortions once there's a detectable fetal heartbeat, as early as the sixth week of pregnancy.

Demonstrators, some with babies in tow, filled the Capitol's lobby even though they couldn't chant or bring signs inside. Many said policymakers have proven they're against women and women's health and said that despite the ban, abortions will continue but just won't be safe.

Later Thursday, Edwards announced he had signed the measure.