I found a Dutch news article about the incident in the Netherlands. I'm Dutch but for mental health reasons I don't check Dutch news at all and I hadn't hear of this until now.

The woman's husband, Wesam Miqdad, was stuck in Greece for years in legal limbo, so he moved to Germany where he married the woman in question, who is Syrian, then they moved to the Netherlands and applied asylum there.

In a Facebook post he said that he had destroyed furniture in his room in a fit of rage, which is what prompted the police intervention. In a Facebook post he said it happened after his appeal was rejected and that he would be definitevely deported to Egypt, but his wife would be sent to Germany and Miqdad would receive a 2-year travel ban to the EU. The fate of their child was up in the air.

Note: Al Jazeera says that the fit of rage was in response to news of a killed relative in Gaza, perhaps it was a one-two punch of the reasons given by the husband and wife.

Police have said that they've received anonymous threats over this and that the officer that threw her to the ground had to go in hiding; Dutch news media blur the profile of the guilty officer. Okay...

According to Miqdad the incident has impacted his family deeply and has made him to no longer want to live in the Netherlands: "I don't want a residency permit from you. Keep it. I just want my daughter."