Who doesn't accept "NO" for an answer?

Hmmmm....

Pushy sales people who "know" they've got just exactly what you need, even though they don't know you from a hole in the wall.

Stalkers who "know" you belong to them and they are exactly right for you, even though they don't know you from a hole in the wall.

Rapists who "know" you really want it, you're begging for it, even when you're screaming "NO!!!!!" and fighting for your life.

Internet trolls who "know" they are your superior and believe they have a right to intrude in your community and "wake" you up, even though they don't know you from a hole in the wall and have been banned repeatedly.

2 year olds who are just being 2 year olds.

What else do they have in common?

They believe they are superior, but that's usually masking a huge inferiority complex.
Insatiable neediness for something: your money, fear, your attention, a new toy.
They believe rules are made for you, not them.
They believe that eventually you'll see things their way if they just harass you long enough.
The emotional maturity of 2 year olds.

Feel free to join in if there is anything I've missed!