BOSTON, United States (AFP) - Former president Bill Clinton (news - web sites) urged Democratic presidential candidate John Kerry (news - web sites) not to copy the Bush-bashing tactics of some of his supporters. "The most important thing is that he not fall into that," Clinton told NBC television in an interview aired a few hours before Clinton was to speak at the opening of the Democratic Party convention here. The two-term president said there was nothing Kerry could do about the tactics used by some of his supporters against the Republican incumbent George W. Bush. "I don't think there's...