But any corporation that takes advantages of tax loop holes, legal or not, is doing evil. By doing that they are taking money out of the pockets of every day citizens in every country who's taxes they avoid paying. Because those citizens have to either make up the difference, or cut vital services such as education, infrastructure, health care and the social safety net. And those citizens can very ill afford to make up the difference.
There are exposes like this done once every few years decrying how low the real tax rate is for some large corporation or other or group there in. Really Google ought not have been singled out by this round. All corporations that do this are being evil. But Google's promised not to be evil -- and for the most part has upheld that -- so they are being targeted.
Really, the most moral course of action here would be to pay the taxes and lobby for the closing of the loopholes. And if they feel the tax rate is too high -- the lowering of the tax rate.