The Reform movement and the National Council for Jewish Women on Thursday expressed concern about a Supreme Court decision banning buffer zones at abortion clinics.

The Religious Action Center of the Reform movement said on Twitter that it was “concerned” by a ruling given earlier Thursday in which the court unanimously declared unconstitutional a 2007 Massachusetts law mandating 35-foot buffer zones at abortion clinics, citing free speech protections.

NCJW said the ruling would endanger clinic staffers and clients.

“It puts at physical risk both the women seeking care at such clinics and those who work at them,” NCJW said in a statement.

A number of groups that advocate for abortion rights had defended the law, saying it protected women’s constitutional right to an abortion from the threat of violence.