that prostitution convictions constitute sufficient rather than conclusive proof of a nuisance. The Panno court found that six convictions for fourth-degree sexual assault and one for lewdness constituted sufficient proof of a nuisance, and properly formed the basis for its conclusion that the activities on the defendants' premises were a nuisance. Id. at 828-29, 447 N. W.2d at 78. Significantly, the court expressly stated that the defendants "introduced no evidence to dispute the validity of these convictions." Id. at 828 n.1, 447 N.W.2d at 78 n.l. Thus, the sufficient proof of a nuisance demonstrated by prostitution convictions is indeed merely prima facie evidence of both knowledge and the existence of a nuisance.
Finally, we note that, although our statutes require a property owner to have knowledge of acts supporting closure under §§ 823.09, 823.10 and 823.11, Stats., they need not require knowledge in order to pass constitutional muster. The Supreme Court has held that proof of knowledge and specific intent on the part of an innocent owner is not constitutionally required in order to abate a nuisance. Bennis v. Michigan, 516 U.S. 442 (1996). Our statutes, however, require such proof. In doing so, the statutes provide a property owner additional protection beyond that required by the constitution.
We turn to Schultz's contention that the statutes unconstitutionally deprive him of his right to freedom of association. We disagree. Schultz is free to associate with whomever he desires. Under §§ 823.09, 823.10 and 823.11, STATS., however, he cannot permit his property to be used for acts of prostitution.
Schultz further contends that by prohibiting prostitution based upon "sexual contact" alone, § 944.30(5), Stats., violates the establishment of religion clause. He