Parkinson’s
Note that from start of video of incident, USSS detail is not surprised in any way. They had seen this before.
White-shirted NYPD cops are surprised. USSS were not.
Boy, I noticed that too! Striking! The creepy actions and facial expression of the balding guy who took her arm...the blank look of someone who has automatically performed the unsavory task a hundred times. Yuck, it made me shiver. The police on the other hand were great, a look of shock and concern as they raced in. But those men-in-black....whoa...just another day in the life of servicing the crippled Spasmodon.