I don't like Trump's policies any more than anyone else here, but I think that it's wrong for companies to play a role in politics. A company like Google was created by its shareholders with the purpose of making money by providing Internet search services. Taking political positions would subvert the goal for which Google was created.
If some of Google's shareholders want to pursue political goals instead of providing search services, they can take their money out of Google shares and start a PAC. This is precisely the reason why Sergey Brin said that he does not represent Google when he was at the protest at SFO yesterday.