Clean it up good and spray away. Since the brake fluid has already eaten
the paint, almost certainly including the primer layer, I'd suggest
flat-out stripping it to bare metal, giving it an acetone or MEK wash
"just to be sure", and starting from scratch. Brake fluid dissolves
paint, but to the best of my knowledge, unless it's some exotic alloy
that's hyper-reactive (not likely on bodywork, I'd say), metal doesn't
even notice it.

The plastic bits *MAY* be more of a problem, depending on what type of
plastic is involved - Some plastics ignore brake fluid the same as metal
does, some melt into sludge almost instantly on contact with it, and
others fall somewhere in between. Which ones are which, and which ones
were used for the bits that got vandalized? <shrug> Your guess is as
good as mine.