Why is this black 'IS' banner flying from a lamp post in Hackney?

The banner has been causing consternation for some residents of the London borough











from Weird News - Funny and strange news - How About That http://telegraph.feedsportal.com/c/32726/f/568330/s/4e935369/sc/13/l/0L0Stelegraph0O0Cnews0Cnewstopics0Chowaboutthat0C1220A64680CWhy0Eis0Ethis0Eblack0EIS0Ebanner0Eflying0Efrom0Ea0Elamp0Epost0Ein0EHackney0Bhtml/story01.htm