Ponies from 3,5/3 Generations. And by lack flaws, you mean not brainwashing ponies and not trying to destroy the world, like Starlight did? Or you mean not throwing innocent ponies into a jail, like a sheriff did, in "Appleoosa's Most Wanted"? Or not making your friend cry, like Pinkie did in "Filli Vanilli"? Or not ruining the whole reception, like the mane 6 did in "Best Night Ever"? Or not throwing ponies back, like Bon Bon did in "Putting your hoof down"? Or not turning the lives of ponies into living hell, like Babs Seed did, in "One bad apple"? Or not sabotaging and exploding the whole factory, like Rainbow Dash did, in "Tanks for the memories"? Or not brainwashing the whole town, like Twilight did in "Lesson Zero"? Or not nearly killing five ponies, like Lightning Dust did, in "Wonderbolts Academy"? Or not being bigoted racists, like Twilight and Rarity, when they called mules stubborn (Applebucking Season) and ugly (A Dog and a Pony show) respectively? ("A Dog and Pony Show" has Rarity's reaction to being called a mule: She screams that mules are ugly and breaks down into tears. However, later on mules are shown to be a sentient "race" just like ponies.) Or not being a speciest, like Trenderhoof? (There are several instances (Particularly in Sweet and Elite and Simple Ways, of unicorns looking down on or at the very least condescending to earth ponies, particularly Trenderhoof's seemingly innocuous line about having "respect for the work ethic of earth ponies".)
I can go on further, but you've got the idea.
Look at the RL reaction at racism. And in the show nobody cares about racism whatsoever, which makes ponies even bigger jerks than people. Here are examples from TV tropes, with racism that nobody cares about:
http://tvtropes.org/pmwiki/pmwiki.php/FantasticRacism/WesternAnimation
Scrolls down to My Little Pony: Friendship Is Magic section.
So, being a bigoted racist is not being a jerk or what?