NEW : 22 people have died in violence across Syria Saturday , an opposition group says . NEW : Opposition activists describe aftermath of an attack in Homs . Comment: Two booby-trapped cars exploded in crowded areas , a state news agency says .
NEW : 22 people have died in violence across Syria Saturday , an opposition group says . NEW : Opposition activists describe aftermath of an attack in Homs . State media report between 24 and 27 deaths in Damascus . Two booby-trapped cars exploded in crowded areas , a state news agency says .