A person or persons who take it upon themselves to inform the public when the government is lying. (iaindale.blogspot.ru)
In case your baby is not responding to any of the remedies mentioned before, do not take it upon yourself to treat constipation without professional help. (newbornbabyzone.com)
The Court of Appeal then took it upon itself to exercise its discretion noting the case was a most unusual one. (newlawjournal.co.uk)