John Stossel appeared on "The O'Reilly Factor" tonight to react to an "invasion" of topless women in New York City's Times Square.

The bare-chested women have joined costumed cartoon and superhero characters in soliciting tips for posing for tourists' pictures.

Last week, city officials created a task force to investigate how they can control the tip-seekers, and will report its findings by Oct. 1.

"Over the past several months, serious concerns have been raised about both the appropriateness of topless individuals in Times Square, as well as aggressive solicitation by topless individuals and costumed characters that often times becomes harassment of New Yorkers and visitors alike," Mayor Bill de Blasio's office said.

Stossel, a libertarian, said that he believes people should be able to do whatever they want on private property. Public property, however, is a different matter, he said.

O'Reilly agreed and asserted that officials should use a zoning system and set aside a particular place for the topless women.

He added that this ties into the total disintegration of New York City street life under liberal Mayor Bill de Blasio.

"Bloomberg and Giuliani were able to control it to a certain extent, but de Blasio doesn't care," O'Reilly said.

Watch the clip above.

O'Reilly: 'Trump Has Again Trumped the Field in Media Coverage'

Gingrich: 'Trump Is Totally Different from Anybody in Modern Politics'

O'Reilly: 'Hey, Republican Party, Do Something!'