cairo egypt arrest 22 people past three days part crackdown gays rainbow flag raise concert activists right group say monday least 33 people arrest since sept. 23 day group people see raise flag rare public show support lesbian gay bisexual transgender right conservative muslim country public prosecutor announce investigation local media launch highly critical campaign raise rainbow flag mashrou leila concert popular lebanese alternative rock band whose lead singer openly gay monday police arrest ahmed alaa sarah hegazy latter first woman involve incident years relation case lawyer say charge join group form contrary law propagate group idea hegazy face charge promote sexual deviancy debauchery supreme state security prosecution order detain 15 days lawyer amr mohamed tell reuters two men arrest early relation flag incident one release remain arrest unrelated incident perceive sexual orientation defendants come least 10 men arrest sept. 28-30 six others early week judicial source say 16 go trial sunday charge promote sexual deviancy debauchery euphemisms homosexuality verdict due oct. 29. one man sentence six years jail similar charge although homosexuality specifically outlaw egypt conservative society discrimination rife gay men frequently arrest typically charge debauchery immorality blasphemy arrest subject anal examinations determine whether gay sex right group amnesty international human right watch say amount torture five examinations take place amnesty international say monday judicial source deny examinations take place say legally carry form abuse matter days egyptian security force round dozens people carry five anal examinations signal sharp escalation authorities efforts persecute intimidate members lgbti community follow rainbow flag incident say najia bounaim north africa campaign director amnesty 2001 52 men arrest police raid float disco call queen boat egypt arrest dozens crackdown gays