And a federal judge in Boston yesterday upheld a so-called “free speech zone” that will be fenced off for protesters near the Fleet Center where the Democratic National Convention will be held next week. The site covers fewer than 30,000 square feet and is located under abandoned elevated train tracks. US District Judge Douglas Woodlock ruled that the zone could not be expanded or relocated because of security concerns and limited space. In response to concerns from Woodlock about whether the area met city codes, officials said police would allow only 1,000 protesters in the area at a time instead of the originally announced 4,000. Judge Woodlock also ordered the city to allow protesters to march directly past the FleetCenter on Causeway Street on Sunday at 2:00pm. The city was planning to divert the marchers when they got within a block of the center.