What caused a crazy racist goes nuts in WH?

What caused michelle obama to go nuts, run from secret service and hide in the Lincoln bedroom where it got up on a dresser in the corner and started throwing things at people? A White House staff member said that it took over 12 men to subdue michelle after 30 minutes of loud non-human screaming that left staff scared while they locked their doors and hid. Apparently it bit 3 staff members, urinated on the carpet and destroyed furniture after being told to stop drinking from the toilets and to not hang from chandeliers. What caused it to go nuts? Was someone blowing a high pitched whistle? Does anyone know if this has happened before?