Denying him the microphone

Hello,

Mr. Ponomaryov said he initially resisted the inclusion of nationalist leaders, but relented when members agreed to sign a pact denouncing xenophobia and racism. A delegation of 10 nationalists will join an equal number of representatives from left-wing and liberal groups and a delegation of the politically unaffiliated in the leadership committee of the so-called Citizens Movement, which will coordinate future actions. There are limits to the liberals’ tolerance, however. When an avowed white supremacist, Maksim Martsinkevich, nicknamed the Hatchet, made the top three in an online vote for speakers at the second protest, organizers stepped in, denying him the microphone. Others have threatened to break away if any of the nationalists are allowed to remain. Several created a Facebook group alled “Russia Without Hitler,” which has more than a thousand members. One of the group’s founders, Konstantin Borovoi, a businessman, has formed a splinter group that plans to hold its own protest on Feb. 4.
(from NYT: Russian Liberals Growing Uneasy With Alliances. Published in January 28, 2012)
http://www.nytimes.com/2012/01/29/world/europe/russian-liberals-weigh-alliance-with-nationalists.html?_r=2&hp

Does the part in blue mean "the organizers denied Maksim Martsinkevich to speak into the microphone"?

Thank you.