They can protest all they want. But there's a difference between letting your views be heard and targeting and harassing people trying to live their lives.

He's actually wrong here, even Justice Alito was very clear that such legislation violates first amendment rights.

Consider this entirely realistic situation. A woman enters a buffer zone and heads haltingly toward the entrance. A sidewalk counselor, such as petitioners, enters the buffer zone, approaches the woman and says, “If you have doubts about an abortion, let me try to answer any questions you may have. The clinic will not give you good information.” At the same time, a clinic employee, as instructed by the management, approaches the same woman and says, “Come inside and we will give you honest answers to all your questions.” The sidewalk counselor and the clinic employee expressed opposing viewpoints, but only the first violated the statute.

Laws like this are not constitutional, even RBG agrees, it was a unanimous SC ruling. I find abortion protestors to be repugnant, but laws like this run contrary to the first amendment.