There have always been detention centers for children, in the past they have been only used for children under the age of 18 who cross the border without any parents or guardians. In April the Trump administration started taking children from parents who cross the border and locking them up in these detention centers.
I tried to use a new picture so I only looked for pictures taken within the last week but I guess someone reused that picture and reuploaded it within the last week, so here is a new pic for you...
RE: Trump's administration created family separation policy, but Trump blames Democrats for it