The arrest of Rumeysa Ozturk, the Turkish PhD student grabbed off the streets of a Boston suburb by immigration agents on Tuesday, marks a new low in Homeland Security’s overzealous pursuit of ever-larger deportation numbers.

The video of Ozturk’s arrest reveals a violation of basic civil rights and decency that should sicken every American and frighten legal immigrants to their core. For the Trump administration, it’s another leverage point to bring universities into line while also throttling another avenue of legal immigration.