Because they took his guns through an illegal process. The Police Officer lied on his affidavit to the Judge. I support the United State Constitution all amendments which include the 2nd and the 4th which were violated here.
The San Bernardino Police Department is under heavy investigation these days due to officers like Scott Roebuck, Brad Lawrence, Gordon Jones, Van Rossum, etc. A former police officer has blown the whistle and written over a 500 page book about the criminal activities conducted by members of the SBPD.