Ads for "Gap Indonesia sweatshop"? (Score 1)

I wonder if we would be permitted to buy adwords for the following search terms:

• imitation Vuitton handbags
• reviews Toshiba cameras
• Monsanto bans replanting corn seed
• Enron fraud
• Wal-Mart union busting
• Ford Explorer rollover
• Paris Hilton fan page ("I may disagree with what you say, but I will defend to the death your right to say it ... ")
• Burger King nutritional information
• SCO lawsuit

The right to post Web pages about such topics is constitutionally protected; the right to advertise them may be on the rocks.