DH came home with one today. The church he attends is orthodox and, for the most part, men and women sit on opposite sides of the church. If there is a couple with kids, it's not unusual for the kids to move back and forth between mom and dad.
Today, DH got there a bit late and was sitting on the aisle. There was a dad further in the pew with two little girls about 4 and 5 who not only wouldn't keep quiet, but kept running back between mom and dad frequently. Everytime they moved out of DH's pew, they managed to step all over his feet. He finally stopped moving out of the kids' way so they had to squeeze behind him and therefore couldn't stomp on his stocking feet (he'd taken his boots off in preparation for communion) with their winter boots on.
They were also making enough noise, without any parental correction, that the priest had to stop mass not once, but twice. The first time, the priest actually interrupted a fairly important prayer to remind people that they do have a crying room in the back and to please use it. The second time, he just stopped speaking and let the silence speak for itself. The father finally took the youngest, and noisiest child, out.