In what circumstances will a police officer be permitted to carry out a general search of a public toilet?

In Bielicki v. Superior Court of Los Angeles County (1962) 57 Cal.2d 602, 609, 21 Cal.Rptr. 552, 371 P.2d 288, we condemned a 'general exploratory search' of public restrooms, noting that the '(a)uthority of police officers to spy on occupants of toilet booths * * * will not be sustained on the theory that if they watch enough people long enough some Malum prohibitum acts will eventually be discovered.' Yet such general exploratory searches pale beside a raid expressly directed into the homes of persons known to be under no suspicion.