AP:

WASHINGTON – The Supreme Court has rejected a challenge to a Massachusetts law that creates a protest-free zone around the entrances and driveways of abortion clinics.

The justices offered no comment Monday in turning down an appeal from anti-abortion protesters who object to the state-imposed protest-free zone of 35 feet outside clinic entrances. Abortion opponents complained that the law violates their free speech rights and forces them into the street, where they've nearly been hit by cars while trying to dissuade pregnant women from entering the clinics.

[Emphasis mine]

My advice is not to protest in the middle of the street, which, experience tells us, often is fraught with moving vehicles.  I suggest to take it down the road, but stay on the sidewalks.