South Carolina Code 41-7-70. Interference with right to work, compelling labor organization membership and picketing made unlawful
(1) By force, intimidation, violence or threats thereof, or violent or insulting language, directed against the person or property, or any member of the family of any person (a) to interfere, or attempt to interfere, with such person in the exercise of his right to work, to pursue or engage in, any lawful vocation or business activity, to enter or leave any place of his employment, or to receive, ship or deliver materials, goods or services not prohibited by law or (b) to compel or attempt to compel any person to join, or support, or refrain from joining or supporting any labor organization; or
(2) To engage in picketing by force or violence or in such number or manner as to obstruct or interfere, or constitute a threat to obstruct or interfere, with (a) free ingress to, and egress from, any place of employment or (b) free use of roads, streets, highways, sidewalks, railways or other public ways of travel, transportation or conveyance.
Nothing in this section shall be construed so as to prohibit peaceful picketing permissible under the National Labor-Management Relations Act of 1947 and the Constitution of the United States.