I’ll take a crack at this.
Sort of. Intent is a typical element of a crime (e.g. murder). Determining someone’s motive can go a long way towards demonstrating that they had the requisite intent to kill someone. Another reason that prosecutors introduce motive evidence is that jurors LIKE to hear it. They want to know why the alleged culprit committed the crime.
Let’s look at an example — say that Alan runs over Betty with his car. The prosecution wants to show that he murdered her, but Alan claims that the whole thing was merely an accident. If the prosecution can show motive - for example, that Betty and Alan had dated up until the day before, when she confessed to sleeping with his best friend, that can help establish that Alan intended to murder her.
So motive is not an element of most crimes, but it can help to establish intent.
It’s true that hate crimes are different - and can fairly be described as a exception in that they make the motivation for the crime an element.
However, I believe it is incorrect to say that hate crimes are the only time that motive affects punishemnt. Motive can be important in determining punishment in certain areas. For example, during murder sentencing in many states, motive can be used to demonstrate aggravating factors that would justify harsher punishment (like the death penalty).
Motive can also be important in developing a defense. In my above example - if Betty had told Alan of her unfaithfulness seconds before he jumped in the car, and then he saw red and ran her over - in some states, he could attempt to raise a defense of extreme emotional distress. Thus his motive for running her over gave him a reason to be so upset and thus a reason why his punishment should be lighter.
I have a few other side comments as well:
In the wikipedia quote you provided, please note that the difference between first and second degree murder is statutory and differs from jurisdiction to jurisdiction. First degree murder in NY is different from first degree murder in HI (as an example). Thus, while the gist of the wiki quote is correct - the law has not typically concerned itself with whether a person is motivated by hatred of a certain group - it is incorrect (IMO and may vary depending on the jurisdiction) to say that the difference between first and second degree murder comes down to intent and not motive.
Also - while we’re on the topic - regrettably, I cannot find the thread - but some wise Doper made an excellent topic regarding hate crimes. It boiled down to whether a person who spraypainted ethnic slurs on the home of a black family who recently moved into a white neighborhood and a person who spraypainted his or her name on the wall of an office tower should receive the same punishment for essentially the same crime - graffitti. I thought that was an excellent point, and perhaps the most cogent argument for hate crime legislation I’ve ever heard. Regrets that I can’t credit the specific Doper.
If I was writing a speech arguing against hate crime legislation - I would make sure that I could address a situation like this. It seems to me that many people intuitively dislike hate crimes legislation when discussing a crime like murder - the thinking being - “Well, he or she killed somebody! Shouldn’t matter why they did it - they should just go to jail!” I think that thinking about whether the motive should matter is much more pronounced in a situation like the graffitti.
That’s my 2 cents, I’m sure our usual legal crew will be along shortly.
The Doctor