You have a brilliant answer from Ibrahim. However, I will try my version. You are making a generalization in your question and coming from that point it sounds very ignorant. There are some people hate Turks, maybe because of the Ottomans were very strong and gained a lot of victories, ruled many nations across Europe for hundreds of years. The more the Ottomans conquered the world the more nations became fearful of the Turks. After the middle of 16th century the Ottoman Empire lost its strength but the hatred towards Turkish people prolonged generation to generation until today. On the other hand, speaking of today's society, there are people whose life ruled by media and believe whatever they are told by and judge accordingly. Those, don't like to read much and do research. I am not certain if they really want to know about other cultures either. Perhaps, they might not even have a rich culture like Turkey has and thus be envy towards Turkey and Turks and keep the negative attitude.