Their testimony can be used to build a case against Assad in any future international tribunal.
and given amnesty history of fabricating lies in the past (as I mentioned above) once can conclude this is a case of another propaganda.
corrected: was "only admins can downvote" which is incorrect
Both downvoting and flagging (which leads to [dead] [flagged] marking, such as your post) can be done by normal users. (downvotes requires a few hundred karma, flagging is available a lot earlier if I remember right)