I am keenly aware of a tension here. As an XR rebel, I participate in acts that are clearly against the law. Indeed, acting against the law is the whole point of the rebellion. On the other hand, I do not think any society can function without a police force to uphold the law. I happen to be a retired professor, not a police officer. But I do not find it at all difficult to imagine a situation where the roles are reversed, where I am a police officer facing a blockade with a retired professor in it.