EDIT: Here's the link, direct from the people involved, article is brief... watch the video :
This is what The Daily Caller says:
Andrew says the organizers decided not to allow Hunter to speak at the last minute.
What they actually say in the video:
We tried for two days to get Hunter to give his speech at the march and he was denied – he was denied being able to speak what he felt and his feelings.
Nothing saying he was ever scheduled to speak (and subsequently banned) in the first place, so from where are you getting that bullshit?