Depends, where were the shops set up? were they within 1000 feet of a school?

Under Federal law the affected areas can include illegal federal drug sales on, or within one thousand feet of, real property comprising a public or private elementary, vocational, or secondary school or a public or private college, junior college, or university, or a playground, or housing facility owned by a public housing authority, or within 100 feet of a public or private youth center, public swimming pool, or video arcade facility.

If yes, then the Fed was within their right, if not then they need to leave these places alone.