When a new law or policy is enforced then someone is going to have a hissy fit over it. In this case it is the people who are excercising. These rich residents need to sit back and realize that not everyone can afford a gym membership and there are a few folks that simply prefer to run in the elements than in a climate controlled gym where the challenges are few and often become 'routine' IE no longer challenging and boring.
To give you a good idea of what Santa Monica is like here's the following by Savage Garden:
SANTA MONICA
(Verse 1)
In Santa Monica,in the wintertime,
the lazy streets so undemanding I walk into the crowd
In Santa Monica, you get your coffee from the coolest places on the promenade
Where people dress just so Beauty so unavoidable, everywhere you turn it's there.
I sit and wonder what am I doing here?
(Chorus)
But on the telephone line I am anyone, I am anything I want to be.
I could be a super model or Norman Mailer
And you wouldn't know the difference Or would you?
(Verse 2)
In Santa Monica, all the people got modern names like Jake or Mandy
And modern bodies too
In Santa Monica, on the boulevard, you'll have to dodge those in-line skaters
Or they'll knock you down
I never felt so lonely Never felt so out of place
I never wanted something more than this
(Chorus)
But on the telephone line I am anyone, I am anything I want to be
I could be a super model or Norman Mailer
And you wouldn't know the difference
On the telephone line I am any height, I am any age I want to be
I could be a caped crusader, or space invader
And you wouldn't know the difference Or would you?