I came aross that first clip a couple months ago, and to be frank it floored me. I've seen clips of those events they call 'raves' and that's what i thought it was at first...

My oldest son, 42 and an ex-drug user, (he is now a Christian, and has been the last few years) happened to stop by the day i found the clip so i played it for him. After about 60 seconds he asked me to turn it off--he said it reminded him of his days before coming to Christ....the bars, drugs, etc...

There is a spirit behind this stuff and its not the Holy Spirit.