Robert has a post at Jihad Watch on the VB/BNP alliance and formation of the "Cities Against Islamisation" movement. Please read it all. This is as good a summary of the issues as I've seen:
This approach hamstrings and marginalizes the anti-jihad movement. Many people who oppose the Islamization of Europe will never join with a race-based party to do so.
Hugh Fitzgerald and I have often commented here over the years about the tragedy in Europe: the mainstream political parties have completely abdicated any responsibility to deal with the Islamization of Europe, thus leaving the field open to groups like the BNP who obscure the issue with racial politics.....
For the US, this development will only contribute to the silencing what Phares calls "the country's cultural warning system" as multicultural leftists and pro-Islamists point with self-righteous indignation at the "racist neo-nazi" opposition in Europe. (Pot calling the kettle black, but that point will be PC-d into oblivion.) The rise of such a race-based movement in the US is highly unlikely at this point. Rather, this further marginalizing of anti-Jihad educational efforts will further be-numb the public and thus increase our vulnerability to Islamist attack in the future.
The anti-jihad movement, if it is to become mainstream in Europe or the U.S., must articulate a positive vision of defense for the human rights of all people against the ways in which those human rights are contravened under Sharia, and avoid being diverted into side issues and non-issues, or formulating the problem incorrectly.