The Penny Drops

Not content with stealing a slice of birthday cake, Batman has now invaded Buckingham Palace. There's video footage here:

http://news.bbc.co.uk/media/video/40066000/rm/_40066094_f4j16_wilcox13_vi.ram

Personally I'm starting to suspect that these people aren't really Batman at all. In fact, it all sounds like one huge joke. A joke aimed at discrediting Batman. But what warped mind could possibly come up with something so fiendish and so funny at the same time...?