NEW YORK -- Activists plan to hold sit-ins at delegate hotels, take over city intersections, block doors to major corporate offices, confront GOP bigwigs and infiltrate events when Republicans come to town for their political convention. They say the aim is not to cause harm or even stop the convention from proceeding inside Madison Square Garden from Aug. 30 to Sept. 2. They will use what they call creative mischief to call attention to their disgust with the Bush administration. "It sends that message loud and clear, that people feel so strongly that they are willing to put their freedom...