Ah the old leftist "equal time" doctrine. That dog just won't hunt.
And yet Christians are demanding "equal time" for creation science in the science classroom. Go figure.
The equal time law was the requirement that radio stations etc. provide equal time for differing political viewpoints. It was always a bad idea and, IMO, unconstitutional.
However, government bodies that hold open meetings and allow the public to comment on various government initiatives do not have the power to exclude certain viewpoints. They either have to give equal time for both sides of the issue (say, 3 speakers from each side) or they have to have a "first come, first speak" policy.