See Sherbert, 374 U.S., at 407 , 83 S. Ct. 1790 , 10 L. Ed. 2d 965 (???[I]t would plainly be incumbent upon the [government] to demonstrate that no alternative forms of regulation would combat [the problem] without infringing First Amendment rights.???); Thomas v. Review Bd. of Indiana Employment Security Div., 450 U.S. 707 , 718 , 101 S. Ct. 1425 , 67 L. Ed. 2d 624 (1981) (???The state may justif