some people have to be hurt before they would be able to response with compassion to the others' hurt. some never, they are full of hatred and cruelty.
要是非说英语不可,"不能"应该是cannot或是can't不是can not。"防止再次发生"是to prevent it from happening again而不是to prevent it to happen again。
thx. anything to add to the topic itself?
六四被碾断腿的方政抵达美国领民主奖