domestic violence

Just need to post as i just witnessed domestic violence in the streets of Brussels. A man was forcing a woman into a house and hitting her and she tried to run away, he ran after her and grabbed her into the house. I don't know French i asked for help from the men around the area. They said they didn't understand me.

An elderly couple told me to leave it there was nothing i could do that i had babies with me and to be safe and go away. I approached students further down the road, they said it was the Brussels way. Unfortunately in my panic i didn't actually get to see the house number, and not sure if i would recognize them, i had my children with me, so didn't want to get to close.

Could i go to the police with such fragmented evidence/information?