With the advance in internet techonology, comes new grounds for protesting. Distributed denial-of-service (DDoS), is not any form of hacking in any way. It is the equivalent of repeatedly hitting the refresh button on a webpage. It is, in that way, no different than any "occupy" protest. Instead of a group of people standing outside a building to occupy the area, they are having their computer occupy a website to slow (or deny) service of that particular website for a short time.
As part of this petition, those who have been jailed for DDoS should be immediatly released and have anything regarding a DDoS or Dos, that is on their "records", cleared.
If you would like more information on what a DDos is please refer to https://en.wikipedia.org/wiki/Denial-of-service