One of the species of wax scale, often seen on hollies, by the way. Need to know your location and see an improved picture (to help ID the exact genus/species before anyone can help with any suggestions of control. This is a tricky insect to get rid of.

Certainly, hand removal this fall and winter would be very helpful.

location: new york city.
when i flick them off they purple gooie inside

The red or purple stuff is a mass of developing eggs. That's why you need to get rid of the adults.

so how do i go about it?

Scale on plants usually are managed fairly well by predators unless spraying of broad spectrum poisons kills the predators off.
if necessary horticultural oils are a means of control.

Here is a link that might be useful: About scale on plants