Wow a black president made certainly a lot of difference. Just like the white ones : lying, deceptive, secretive, and dishonest (See NSA). Sorry if I fail to see much difference.
He's been mendacious as all of them, sure. That's not the important difference.
The important difference is that there are now millions of black American kids no longer growing up in a world where they just "know" as a first principle that "black people can't be president". That sort of example simply changes people's outlook. Inspiration and aspiration matter.
I rather see millions of people disappointed that no politician, no matter the race or creed, can ever be trusted. Obama had a chance to make a difference and he failed miserably.
Err yeah. Why would you think that a black president would be different to a white one?
That's precisely the shakeup the world needs - to realise that whatever skin colour, male or female, people are people and you shouldn't judge them negatively or positively on how much melanin or testosterone they produce :P
To be fair, it might have helped some people: black people are just the same as anyone else. They can be president and they'll be the same corrupt shit bags as white men who become president.
1. There are people it would inspire, and
2. There are people whose expectations would be shaken up
The latter group needs as much help as the former.