I was responding to your blanket statement-- that is what got us here. You're still avoiding the hard question about all laws being conditions on freedom.
As for public gatherings? Sure: they can interfere with my freedom to go about my life. They might prevent me from leaving my home. They might cause dangerous situations. A reasonable level of oversight helps to minimize that sort of thing. Lisbon went well beyond that, I think we would agree.
So: laws or no laws?
Edit: From my interpretation of your tone, I doubt we're actually very far apart on the issue. Permits for this sort of planned thing should be easy to get and extremely hard to turn down. Spontaneous demonstrations should be given very wide latitude to allow them even without prior approval, with local authority only intervening to make sure things stay safe. Demonstrators themselves should be held to a high level of accountability for their actions if things turn bad, but local authorities should be held to an extremely high standard of accountability if they interfere inappropriately.
But there are the difficult questions: keeping things safe, inappropriate interference... these are places where lines have to be drawn. They are gray areas. They take human judgement because one-size-fits-all policies don't actually fit all. This is a fundamental problem for civil society because people differ in their beliefs on where to draw the line. And people are fallible, they can make mistakes in judgement. People are also corruptible, or come with their own biases. It makes things difficult and messy, but that is the hard work that it takes to give people as much freedom as possible without sacrificing one person's freedom for someone else's. Even then there must be compromises: I think it's a very reasonable restriction on my freedom of movement to have to wait in traffic for a while because other people are exercising their freedom to assemble and protest etc.
My observation is that uou can tell the countries that embrace freedom from those that are tyrannies by whether or not they struggle with these questions vs. having one imposed on them without any recourse save revolution.
But it's still a matter of degree. England is much more free than China, but compared to the US its freedom of expression is much more limited by libel laws. While in the US, privacy-related freedom is much more limited compared to the EU with GDPR (even as flawed as that still is).