1. clamp down - Noun
2. clamp down - Verb
repress or suppress (something regarded as undesirable)
Source: WordNetclamp-down
History is full of examples of people who clamp down after they began to enjoy too much freedom. Freedom can lead to instability, anarchy, and confusion. So there can be a moral counter-revolution. Gary Ross
For an adult, the world is constantly trying to clamp down on itself. Routine, responsibility, decay of institutions, corruption: this is all the world closing in. Bruce Springsteen
There are a lot of people, a lot of powerful people, who want to clamp down on the Internet. And to be honest, there aren't a whole lot who have a vested interest in protecting it from all of that. Aaron Swartz
We've seen a massive attack on the freedom of the web. Governments are realizing the power of this medium to organize people and they are trying to clamp down across the world, not just in places like China and North Korea; we're seeing bills in the United States, in Italy, all across the world. Sergey Brin
The police clamped down on illegal drugs Source: Internet
At the time, a clamp down on online crime was the justification for targeting youths simply seen with a laptop or an expensive phone or similar device. Source: Internet