Thoughts on Life Part1

Why is calling someones a second class citizen offensive yet calling someone poor or homeless is okay? I mean classifying is okay but only if it compliments the rich or law makers and insults the rest in the most passive aggressive way possible. The only reason any of us accept this is because we have little to no power in changing it. 
Question:Why must a line be drawn in the sand and classes be made?
Answer: Cause as humans we rather horde what little power is on this earth then share because we are evil by nature.
                 Sad as it may be we just have to Laugh At Life until our dim light fades and we become nothing more then another fading memory.