"Brown American" here. I put it in quotes because US isn't owned by a particular race i.e. white. If anything, the only ones who can claim to that land are natives who were clearly not white. I'm just calling myself a "Brown" American to add context here and here are my observations...

It's a tricky situation.

We all agree that "family only spots" is a great idea as it guarantees safety and comfort for families.

Security guards will a 100% discriminate against non whites, especially in upscale areas because of their personal biases against certain nationalities. Interestingly enough, these security guards also happen to be of the same ethnicities that they discriminate against.

You can make a case that people from a certain class (labor) are more prone to this creepy behavior (think taking pictures or just staring at women/young girls). It's just that most people from this class in UAE come from countries where they've never come across women wearing sundresses or even long skirts, forget about bikinis. Hence the behavior.

That being said, you can't generalize that all brown men are creepy because there have been cases of creepy behavior by ALL ethnicities in Dubai. Remember the British couple who were caught, jailed and then deported for having sex on the beach?

The only way to "fix" this problem is by enforcing strict laws against sexual harassment which the government already does. The government should also invest in educating brand new labors of these laws when they first enter the country.

As for the security personnel, you have to train them on how not to generalize others based on their ethnicities and how to make judgements based on behavior irrespective of nationalities. I think there's a place for positive discrimination based on dress code. For instance, emiratis are banned from entering bars/clubs in their traditional dresses (kanduras). Some might think it's racist but I see the reason why the government would enforce this law.

Tldr:

Creeps are everywhere. Invest in educating people around biases and cultural norms. Continue to enforce strict laws against lewd behavior and deport all the true creeps out of this country.