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Would you stop taking the bus after the horrible killing on the bus?

I think that's an isolated incident. You can't stop doing something because something bad has happened to someone. If you did that, you would find everything you do is dangerous and you would end up hiding at home. Even so, you might die from a plane crashing into your house or die from food poisoning.

Are there any mistakes? Is it understandable?
Thanks.
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Would you stop taking the bus after the horrible killing on one?

I think that's an isolated incident. You can't stop doing something just because of an unhappy incident someone else has suffered. If you did that, you would find everything you do dangerous, and you would end up hiding at home. Even so, you might die from food poisoning or a plane crashing into your house .

('Incident' is a little weak here, but two 'something's in a row-- especially when they are different 'something's-- is very lazy.)
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Thank you, MM. I wonder without else, how does the sentence sound to you?
Mister Micawber someone else has suffered.
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The 'else' clarifies the situation.
Here's a slightly different take:

Would you stop taking the bus after the horrible killing on it?

I think that was an isolated incident. Anyway, you can't stop living just because someone was murdered. If you did, you'd become paranoid and end up locking yourself up at home. And even then you still might die from food poisoning or a plane crashing into your house.
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Thanks, Huevos. That's a very natural version.