That’s a Groenendael, not a Malinois. Today, to see Groenendaels in police work is very rare. Both are considered Belgian shepherds, but the 2 varieties are very different in working capability. There are 2 other varieties, the Tervuren and the Laekenois. The Groenendael is known as the Belgian Sheepdog in AKC parlance.
The Belgian Sheepdog is still used quite a bit in police work in Europe. But the Mal dominates the police breed in many European countries.