Here in Sweden, there is an increasing risk of being someone expressing prejudice when you express your opinion, true or not. I really, really don't like pointing fingers here, but the people MOSTLY annoyed here in Sweden (that are the most vocal (this statement is VERY unresearched), of all the groups I know of, al-right?) are: people with alternate sexualities and muslims.
These two groups whine, alot. In my (most likely) uneducated mind, these two groups are minorities that wants to change how the majority acts and talks.
For some reason, the will of the minority takes precedence over the will/habits of the majority.
This might be my idealism, but THE MINORITY SHOULD NOT DICTATE THE MAJORITY.
The minority SHOULD make the majority aware that "Oi, this isn't right, we would like it changed, please? If we need to, we'll make a new majority, by telling people what we think, and see IF they agree". TO CHANGE THE WAYS OF THE MAJORITY JUST TO SATISFY A MINORITY IS, AND WILL ALWAYS BE A FORM OF TYRANNY.
Of course, the sheer amount of people on the planet makes this a tad difficult. The second and third issues are:
A: how much information is shared amongst people and:
B: how we find out what they know, and agree upon.
Prejudice is both ignorance and difference of what is right or wrong behaviour. Again, here would be minorities forcing majorities to alter common behaviour to satisfy these minorities.
I myself can see that I have left some points out, and I'm going to, since that I can myself see what COULD happen if these points are brought to their logical extreme. Most "humanists" will find it REALLY uncomfortable: however, I bring this up: the more people we breed, the less space there will be for minorities to develop into majorities without bloodshed.