The New York Yankees are baseball's Evil Empire. This is actually a matter of judicial confirmation, not the opinion of some columnist seeking a combative lead. Back in 2008, a company registered under the name Evil Enterprises Inc. sought trademark rights over the phrase "Baseballs Evil Empire." Apparently, the company lawyers weren't too attentive with the proper use of an apostrophe.
Anyway, Major League Baseball objected to the attempted trademark claim. The Yankees themselves eventually joined the legal battle, one that stretched into 2013. The Yankees argued that since they were widely known as Baseball's Evil Empire they had rights to the phrase, at least when used in connection to baseball.