Jerusalem (CNN) -- A 23-year-old American activist stands in front of an Israeli bulldozer in Gaza. The bulldozer drives over her, crushing her to death. These are the facts. Rachel Corrie, along with colleagues from the International Solidarity Movement, was trying to prevent Israel from bulldozing homes in Rafah, close to the Egyptian border. Her activism cost her her life in March 2003. A colleague said at the time, "Many times the bulldozer came up to us and buried us with dirt, but they always stopped." Corrie's parents want to know the truth about their daughter's death, whether the killing...