DUmpsters have been known to stoop so low as to create FR accounts, post something just barely on the edge of racism (bad enough to be tasteless or questionable, but not so over the top as to get yanked within five seconds), and then run back to DU and start a thread screeching "Go look at how evil the Freepers are!"
That said, given that the DU poster simply linked to a random page halfway through a 575-post FR thread instead of to any actual examples, I'm going to simply presume they're lying. I'm not going to be bothered to play "Spot The Hater" as if it's "Where's Waldo." Especially when to them, a "hatefest" is whenever any thread that contains the word "Muslim" consists of any words other than "Allah Akhbar!"