'Equal before the law' my ass, when cops and the BATFE are involved

...Special Agent in Charge of the ATF in Los Angeles Eric D. Harden warned that the agency has learned of an “emerging problem” with respect to law enforcement officers buying and then reselling guns, in possible violation of federal firearms law. The involved guns include many which are considered “off-roster” under California law, meaning that they can be purchased only by law enforcement officers and are not available to the general public.

Someone explain to me why a gun that a plain citizen can't buy should be allowed to cops?
“Recently, ATF has discovered that some law enforcement officers who do not have a (Federal Firearms License) are purchasing ‘off roster’ firearms and reselling those firearms to non-law enforcement entities for a profit,” Harden wrote.
You or I, we'd go to jail.  But we don't have a badge.  So
“ATF believed education is the most effective way to stop the growing trend of law enforcement officials engaging in the business of unlicensed firearms dealings,” Harden said in the advisory. “It is our goal to educate, not investigate, to ensure law enforcement officials comply with federal law in order to avoid unnecessary public embarrassment to themselves and your Department/Agency.”

But we can trust them.  Sure.  They tell us so.