Hen attacking chicks

Its actually almost never to late to tame them down.. it just takes patience and work. Your rooster turned aggressive because you got too friendly with him as a youngster and when his hormones kicked in, he only saw you as a rival rooster. Its better to stay aloof with the rooster until they're mature and can recognize/respect that you're a human.

To tame your little reject chicks (and I mean that endearingly.. its not their fault the hen's racist), treats go a LONG way in taming them. Take to spending time sitting near by, toss tasty treats like BOSS or mealworms in their direction. Pick a 'calling' sound that you'll use consistently for them to associate with you. I use "Chick chick chick chick chicka!". Gradually work the treats closer to you until they're eating out of your hand. Talk to them about random things, the weather, how cute they are, what was on Survivor/The Bachelor yesterday.. etc.. anything that will let them get used to the sound of your voice. Keep all movements slow and obvious. No quick jerks or jumping up or lunging for them.

Once you've got them eating from your hand.. start reaching (SLOWLY) to stroke them on the side, on the wings.. do not reach from above, come in from the side, and keep talking soothingly, "Who's a pretty chicken.. pretty girl.. are those meal worms yummy?" If they'll let you, give them a gentle scratch under the wing and belly, even the chin if they'll tolerate it. As they grow used to that, you can move on to start touching them on the back and head. Once they're tolerant of that, get them used to your hand under their belly.. then start gently lifting them, just a few inches off the ground and immediately back down. Eventually, you'll be able to pick them up without any fuss.

It took us about a week, 1-2 hours a day to fully tame down the millie fleur when we bought her at PoL. She had NEVER been handled as a chick and came from a free ranging flock. On day 2, she flew over the fence in a panic when we were trying to herd her back into the coop at sunset. By day 7, I was picking her up with one hand to feed her BOSS and mealworms from my hand and holding her upsidedown.

Thats really awesome advice, thank you so much! I'm going to start working with tomorrow.

I'm going to go out in a few minutes and move everyone around, hopefully those little babies aren't in the barn yard still, I hope they're in the coop!

UPDATE! Nothing has changed, the hen is still super racist. I kind of don't know what to do. The chicks have been in the shed in a cage for a week or so, so tonight I decided to try to put them back in the coop with the hen at dusk when she was going into the house for the night.BIG MISTAKE! The hen attacked them, one in particular. They got out of the coop and were on the outside, I left them out there for a while then started to hear more cheeping from one chick. I went out and the hen accepted one of the chicks but not the other, the one she didn't accept is the one she didn't like the most when this first started. Out of the two, the one she has a HUGE problem with is the hen and the one she accepted back is the rooster.
So I put the little baby in the dog crate that the rooster had been in and let the rooster back into the coop. I covered the baby up for tonight and I'll keep her in the dog crate for a while until she's bigger, I guess? They're 4 weeks tomorrow.

What should I do? Is there anyway to make this better? How do I make the hen less racist?! I don't understand why she took one but not the other. I kind of at a loss.

Some intricacies of the chicken mind will never be fathomed. You may have to rehome the rejected one or you can try again when he/she's bigger. I'd still leave it in the crate where he/she can see the others so it doesn't feel lonely at the very least.