U2 have always been a social and politically minded band. They came out against Reagan, taunted Bush senior on Zoo TV, spoke out against other social issues etc. How in the world is anyone surprised or angered that they've chosen to keep doing what they've always done?
People have a choice: either like the band or don't like them. If their politics suddenly make you uncomfortable, stop listening to them. Don't bother to attend the concerts. But do not expect to silence them. They have a right to their opinion, just as right-leaning musicians have a right to theirs, just as left-leaning musicians have a right to theirs.
The fact that they're Irish is irrelevant as far as their opinion goes--they've got a right to it just as much as any American does. They pay taxes here, they own property here, they live here a decent amount of time and have knowledge of our country. Being from Ireland, they've witnessed a lot of things and perhaps have insights and knowledge that we don't have. No harm in taking what they say at face value and making our own decision on whether or not to believe what they're saying.
Also, people are reading way too much into what they said in this interview. They are certainly drawing parallels between TJT and the world in 1987 and TJT and the world today. Because there ARE parallels. But that does not mean they're going to spend 2 hours every night preaching about politics or religion or what have you. It just means that they're acknowledging the album and its political ties.
Do people not remember what Bono said a month and a half ago in the U2.com interview? He very clearly said that he disagreed with who was elected, but respected that Americans made their choice. Further, he said that music has the ability to unite people and that's what he wanted to accomplish during the upcoming tour. That, to me, says that any political talk will be kept to a minimum on TJT tour. In short, people are panicking about this for no real reason.
That's all I'll really say since this forum has a rule against political commentary. We're all U2 fans here and I would hope we know our band's history well enough to know that this interview is par for the course and a continuation of what this band has always been.