Love all the Godwinning in this thread, it just shows normal people how ridiculous it all is.
(By the way: I doubt most privacy advocates care much about this. Those of us who travel in the underground are used to running into not-so-great people, many of whom seem to do way worse things than donating to political parties! But feel free to expend more resources on your campaign.)
If you know that he will spend his money in support of that party, and you still buy services from him, you are helping him promote whatever views he holds. As simple as that. There is no cop out.