Was the Rise and Fall of the Niagara Movement
all due to Booker T. Washington?

DuBois feud with Booker T. Washington led to the first Niagara Meeting and possibly its dissolution too. 

In the early summer of 1905 Washington went to Boston to address a rally. While speaking he was verbally assaulted by William Monroe Trotter (a Harvard college friend of DuBois). The subsequent jailing of Trotter on trumped-up charges, apparently by Washingtonites, raised the wrath of DuBois. This incident caused DuBois to solicit help from others "for organized determination and aggressive action on the part of men who believe in Negro freedom and growth.”

Twenty-nine men from fourteen states answered the call in Buffalo, New York. Five months later in January of 1906 the "Niagara Movement" was formed. So-called after the cite of the meeting place–the Canadian side of Niagara Falls.  Its objectives were to advocate civil justice and abolish caste discrimination. The downfall of the group was attributed to public accusations of fraud and deceit instigated and engineered presumably by Washington advocates, and DuBois' inexperience with organizations and the internal strain from the dynamic personality of Trotter. In 1909 all members of the Niagara Movement save one merged with some white liberals and thus the National Association for the Advancement of Colored People (NAACP) was born. 

Source:  W.E.B. DuBois Learning Center, New York City Public Library