Of course, almost everyone knows that the Pride march has been banned, but the effect of this is that no one has the individual freedom to chose to 1) attend and support 2) watch from curiousity 3) go and protest or 4) ignore the whole thing. That means that everyone' s freedom has been diminished by the actions of an allegedly democratic city government.
We forget too often that the other side of the freedom of speech and assembly is the right of all adult people to freely pick and choose their "informational environment" from a range of choices that is not limited by state interference.
Banning the Baltic Pride in Riga directly violates the specific right to free speech and assembly of the LGBT community and organizations, whose causes may be of no interest to many other Latvians. But the ban also diminishes everyone' s freedom of choice and opens the way for the local and national governments to take even more choices away from the people. First we say you shall not be informed about ********. Next it will be ########. Does anyone, other than the elected products of a warped homo-postsovieticus society want this?