Yep, you’re right. After a quick search, it looks like the American Revolution started in 1765, and the French Revolution started in 1789.
However, I know French policies and political development had a profound impact on the ideas central to liberal democracies, as it could also be said of American policies and political development.
Yes, you’re right everything can cause serious harm or kill, but certain things are designed to harm or kill, or designed to look like something that could harm or kill.
Context is a big factor here. A person holding a 6 inch knife in a kitchen? No one is going to bat an eye. They’re probably using that knife to prep vegetables. Same knife, same person but they are walking around a market/playground/movie theatre? Suddenly it’s a very different situation and context.
Is that stranger with the knife safe? I don’t know, but I do know that I don’t have anything to defend myself aside from what is around me if they ARE NOT a safe person.