Denouncing evil in music venues and stores selling revealing clothing

Question:
He says: We love you for the sake of Allah, Honorable Shaykh. My question is: What is the method for dealing with music cassette shops, video cassette shops, and shops selling revealing women's abayas, such as belted and decorated abayas, and shops selling youth clothing that instills a love of desires and vice, as well as musical gatherings and festivals where there is free mixing between women and men? How do we denounce them?

Answer:
The Messenger (peace and blessings be upon him) said: So it is necessary to denounce evil, even if only with the heart. Whoever has the authority to change it by hand should do so. Whoever does not have that authority should change it with the tongue, through admonition, reminding, and reporting them to the people of Hisbah (religious police) so that they can be restrained. This is necessary. So if you see any of these evils, report them to the men of Hisbah and the centers of the Commission that are able to restrain these people. Yes.