The First Amendment contains six specific protections, somewhat related, and presumably so very important that they all tied for first when the Framers were debating what to guarantee the mostiest mostest. These are the biggies that squeezed in ahead of militias and quartering of soldiers, and even beat out due process in order of presentation. The right to protest. The right to associate with whomever you wish, including but certainly not limited to political organizations of any and all stripes. Freedom of the press and of speech – absolute linchpins to any nation hoping to maintain the slightest credibility as a true democracy.
But coming ahead of all of them – earning the first two slots in all of Amendment-dom – are the twin ‘freedom of religion’ clauses.