Re: Exercising my 1st amendment rights ...
There's no limitation on the right of free speech written in the 1st Amendment, either, yet the Schenck decision found one anyway, implied, in that you can't use speech to deny the rights of others (the "Fire in a Crowded Theater" test). Since ANY large assembly of people raises the inherent potential to wreak havoc (the more people there are, the less chance any one will own up), there are laws in place to control such assemblies: laws which have survived challenges due to the need to protect the freedoms and rights of non-assemblers.