Homeless protesters target Bono's Dublin hotel
Bono famously shifted his band's tax affairs to the Netherlands to dodge paying royalties in Ireland, but was subsequently criticised when he tried to push the Irish finance minister to increase the level of development assistance to poorer countries: the Minister was unimpressed by Bono's willingness to spend other people's taxes while not being willing to dip into his own (very deep) pockets.
The reference to Ballymun is a dig at Bono's claims to originate from that disadvantaged area of Dublin. In fact, he grew up in the more affluent residential area alongside the Ballymun tower blocks. In an interesting illustration of the class divisions that plague Ireland, the residents of the posh area where Hewson grew up were so horrified at being associated with a working class estate they voted to change the name of Ballymun Avenue to Glasnevin Avenue.