A strike by 90,000 union workers turned violent in Seoul Nov. 6 when riot police broke up a march. The protest became a battle between police with shields and protesters with long wooden sticks, and dozens of people were injured. The incidents followed an earlier demonstration in which 10,000 pe0ple shut down a main boulevard. Tensions are especially high between labor unions and authorities because several violent strikes have occurred this year, and three union leaders recently killed themselves to protest the lack of a settlement. Another strike was planned for Nov. 12 and more are likely. Follow local press reports for timing and location of demonstrations, and avoid them.