Absolutely. It was a Republican dirty trick (what other kind of trick is there in politics?) that tried to make it sound like a Democrat phone promotion. The real "dirty" part of this is that it targeted blacks (who as a group at the time were very much against same-sex marriage), and Kerry was also against same-sex marriage.
Another good example of what Republicans consider "fair" politics is hiring a bunch of flaming gay men in Florida to help "support" Kerry on his same-sex marriage position.
No matter how the low the Republicans reach in order to retain power, there is a certain group that will always vote for them no matter what and another group of fence sitters who are very capable of being sucked into the BS.
Charlie (aka good marketing) Monoxide