(a) No person or persons shall intentionally prevent an individual from entering or exiting a Reproductive Health Care Facility by physically:

(.1) detaining the individual; or

(.2) obstructing, impeding, or hindering the individual's passage.

(b) Nothing herein shall be construed to interfere with picketing in conjunction with labor disputes [as defined in 43 P.S. § 206C(c)] involving Reproductive Health Care Facility employee-employer relations.