How Do I Blow Up a Building?

How do I blow up a building? Yeah, I’m seriously asking.
I’ve been planning this for quite some time now, so please help me see if I’ve got this right, okay?
I thought I’d make of it a revolutionary act, both a local and global protest against the governments and political power — a fight against the system. What do you think? I could wear a mask — a Joker mask — to gain the attention of…