The flyer depicted above (snagged from imgur, btw) might not be of direct relevance to the "march," but is at least another recent campaign of similar theme.
Claiming March 15 to be an "international day for independent Pro-White activism," organizer Kyle Hunt teamed up with Free America Rally (another racist group) to promote a demonstration in New York City, according to The Gothamist.
Arguing against a reduced white dominance while still claiming to be non-racist, Hunt et al provided downloadable materials, such as "diversity = white genocide" flyers, for insecure and socially dysfunctional fools to distribute at the New York gathering and other locations. (For the sake of authenticity, here's the site link - http://whitemanmarch.com/ - but please don't do the organization any SEO favors by using it.)
Of course, the site claims the "march" promotion is not of racist intentions. (It is openly anti-Semitic, however, in complaints about "Kosher lies" cited on a downloadable flyer.) Instead, Hunt only wishes to combat some extreme racism to which whites are subject, he says.
"We will make it clear that we will not sit idly by as our race is discriminated against, mocked, displaced, and violently attacked, all of which amount to white genocide, according to the United Nation’s own definition of genocide."
(For the record, here's the UN's definition of the term: "any act committed with the idea of destroying in whole or in part a national, ethnic, racial or religious group.")
If any closet racists missed yesterday's parades, don't fret. There are other white-pride/Holocaust-denying/immigrant-deporting events through July, at least.