Direct messages to the marketing managers, CEO AND CFO when possible.
Marketing and financial officers should know when budgeting for a campaign, if it makes sense to place in caustic, political publications.
They owe it to stockholders to explain such allocations of millions in ad buys on fringe, political pubs.
What would really work is to launch an “Executive Email Carpet Bomb” (see www.consumerist.com for how to do this), toward the executives of every advertiser of US. THAT will get their attention in a hurry.