Immigrants have experienced the most attacks, although other groups have also experienced racism and ethnic tension. Skinheads have mounted attacks on immigrants and foreign students in France, Germany, Sweden, Spain, and Switzerland. A recent survey of 13,000 people in 12 countries found that race, religion, and culture influence attitudes. European gypsies were the most hated group, and anti-Semitism is a significant problem in many countries. People in both Eastern and Western Europe express prejudice against particular groups, with the disliked groups varying from country to country. Police officials in several countries have expressed growing concern about the problem, particularly where groups are operating across country violence. Efforts to address the problem need better coordination, because all indications are that the problem will not subside. Table