LONDON (CNN) - The realm of social media offers a great deal of freedom. Some would say too much freedom, for those with bad intentions.
Some recent incidents in Britain are igniting calls for Twitter and other sites to get more involved, in controlling their content.
It all started with this campaign to get a woman on Britain's 10 pound bank note by Caroline Criado-Perez. Just hours after this photo was taken, she was bombarded with abuse on Twitter. Threats to rape and kill her at her home, circulated with an address.
"Really, really graphic, violent and detailed, anatomically detailed; descriptions of what's going to happen to me. It's been rape threats, death threats. It's just relentless," said Criado-Perez.
At its peak, nearly 1 tweet a minute; she continued to be bombarded for several days from anonymous users that, once blocked, simply opened new accounts.
Some advised her to ignore it, but she didn't. She reported it to police, and 2 men were arrested, and more may follow.
Criado-Perez said, "I think a lot of people who have been tweeting me have been acting with impunity. That nothing will happen. Some openly laughed when I said I was going to deal with them, because they felt there was no way of getting back. So police and Twitter need to make a strong stand. To say, ‘No, there are laws and we will deal with them.'"
More than 120 thousand people have signed a petition calling for Twitter to install a "report abuse" button for every tweet on every platform and to hire more staff to screen out abuse and criminal threats. Twitter has said it is hoping to roll out a new, streamlined system for reporting abuse soon.
Criado-Perez says she just received 2 new death threats, but the torrent of abuse has started to slow down. She says from her experience, the advice "don't feed the trolls" just doesn't work.
"To ignore them would be just to give them what they want really. They want you to shut up. They want to feel they've won," said Criado-Perez.
Her advice, report it to police. Threatening to rape or kill someone is illegal, even on twitter.