In 2013 Google sponsored a lavish dessert buffet for those attending the Competitive Enterprise Institute's (CEI) annual dinner in Washington. The libertarian group had defended Google from charges that its dominant position in the Internet search market violated antitrust laws. Still, Google took flak from environmentalists - and from many of its own employees - because CEI also opposes environmental regulations and government actions to stop climate change. Google didn't sponsor the think tank's 2014 dinner.
A link to CEI can be found here.