Federal civil agencies should be disarmed with the exception of the US Marshall Service(when operating in a nonstate area) and the Secret Service(when operating as bodyguards).
Absolutely!
By what rationale do the USPS, IRS, EPA, FDA, BLM, the Dept. of Agriculture and 30 or 40 other federal agencies have highly armed and trained "security" departments?
They may not be designated as SWAT teams but they are armed and equipped with SWAT and military style weapons and gear.
One characteristic of "security" teams like that is that once they are equipped and trained they are eager to apply their training and bureaucrats look for opportunities to do so.
Example: In 2013 armed EPA officers raided the town of Chicken, Alaska. The agency said the raid was conducted to look for possible violations of the Clean Water Act.