With all due respect, your pictures are exceptions. Music concerts and Occupy protests are not normative indicators of mainstream dress, regardless of how those specific instances correlate with immoral behavior.
I am not saying that standards of dress have not decline. That is patently obvious. But I am reminded of a comment from Chuck Smith, whose Calvary Chapel church grew from a couple hundred people to become one of the original mega-churches in the late 60s and early 70s. When his elders complained that the carpets were being damaged by all the barefoot hippies coming to church, his reply was, “Then tear out the carpets.”
With returned respect, I disagree - strenuously.
You are making the false case that these people attending protest and deranged concerts only dress as such for these events, when the case is that THIS IS THEIR NORMAL DRESS.