哪位英语高手帮我看看这个语句子语法错在哪了?

哪位英语高手帮我看看这个语句子语法错在哪了?
3.There was some bad news that was seen by me last night,at the moment,the idea in my mind was that I would like to become a superman and to kill the humans that have a behavior unimaginable and abnormal.

如果只针对语法,修改如下：
There was some bad news that was seen by me last night.At the moment,the idea in my mnd was that I would like to become a superman and to kill the people that have an unimaginable and abnormal behavior.
如果你用human是指人类,people是人们.behavior不用复数,他们可能有着同样的行为.
被动语态用得太多了,读着有点累.
修改如下,是否通顺一点?
I saw some bad news last night.An idea went through my mind at that moment.I would like to be a superman to kill those people who have such unimaginable and abnormal behavior.

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