"Okay" is rather subjective; it will mean 100 different things to 100 different people.
To me it is always okay to like or dislike people. That is, it's your right to an opinion. As far as what other people think of that? It's your personal experience with the individual, not theirs.
Special needs' people can be an exception, but it's important whether or not their behavior is willful. They may not have control over it or simply don't understand. In the end I'd say it's more about that behavior than the person, unless they are one in the same (if that makes sense).
To me it is always okay to like or dislike people. That is, it's your right to an opinion. As far as what other people think of that? It's your personal experience with the individual, not theirs.
Special needs' people can be an exception, but it's important whether or not their behavior is willful. They may not have control over it or simply don't understand. In the end I'd say it's more about that behavior than the person, unless they are one in the same (if that makes sense).