The celebration of european ancestry being a prima facia evil, of course. Thankfully, it is generally (though perhaps quietly) recognized that people like Kosofsky are idiots.
Gee. Don't I recall some difficulty some gay groups had, wanting to march in a St. Patrick's Day parade (in Boston?)? They didn't seem to have any problem with associating with "white pride" then.
And we won't go into all the mockery that appears in --nay, that comprises-- a gay pride parade.