There are a good many transitional forms in the fossil record. Most of them are not known to the general public because they just aren't very interesting.
The "dehumanisation" is always attributable to preexisting beliefs - and not evolution itself. Creationism is just as - if not more - supportive of racism. And even if that were not the case it would have no bearign on the truth of evolutionary theory.
Irreducible complexity ? TO the best of my knowledge that one relies on Behe's opinions that the "indirect" routes - the routes any knowledgable person would EXPECT evolution to use - are too improbable. If you can find a decent argument FOR that let me know - Behe didn't bother to include one in his book.
Improbability ? I haven't seen one argument which amounts to more than playing with made-up numbers.
What's wrong with creationism ? Well is is'nt the idea that we might be responsible to a higher being. Plenty of Christians accept evolution. The fact that creationists frequently attribute such motivations to their opponents IS one of the things wrong with the creationist movement. They usually insist that people who dare to disagree with them cannot be Christian.
But what is wrong with creationism ?
Well the main questions is why is there so much evidence for evolution ? Is there a creator trying to fool us into believing evolution ?
Another is that there is no theory of creationism - the closest you will find is apologetic attempts to "justify" a more-or-less literal interpretation of Genesis. By any account that is religion since it STARTS with the assumption that Genesis is in some sense a scientific account of the history of the world.