According to this article in Alternet Google has become a financial supporter of many Koch connected groups such as the Cato Insttitute, Heritage Action, the Federalist Society and ALEC.
This move, at a minimum, puts them on somewhat questionable footing when it comes to the whole "don't be evil" tagline. Providing financial support to groups that advocate cutting food stamps, lobbied for the government shutdown and for turning Medicare into a voucher program does tread fairly close to the "evil" line.
Google has not responded to a request for comment at this writing.