To sign this petition:
http://www.amnesty.org.uk/actions_details.asp?ActionID=358

In an email forwarded to me by confidential sources who have risked life and limb by putting themselves down for his mailing list, Mark Thomas says:

"Hi folks, I wonder if you might spend 30 seconds going to the link below. It is an Amnesty e-mail to the Vice President of Colombia and it is asking for protection for Colombian trade unionists. The people under threat are people I have meet and stayed with in Colombia. They deserve all the support we can give them. Thanks and happy Easter folks Mark"