vatican city topless activist feminist group femen try snatch statue baby jesus nativity scene st. peter square monday stop police grab reuters photographer say woman jump guard rail rush onto larger-than-life nativity scene shout god woman slogan paint bare back vatican gendarme stop take statue detain incident happen two hours pope francis deliver christmas message 50,000 people square group website identify alisa vinogradova call sextremist say goal group found ukraine complete victory patriarchy femen activist stag similar action christmas day 2014 manage take statue crib arrest version story correct year final paragraph topless femen activist try snatch jesus statue vatican crib