meaning of 'You have blood on your hands'

[Tata_Y2000]

I read this sentence from CNN news but I don't understand deeply what does it mean.

Could any one explain me what 'You have blood on your hands' means?

Thanks

[Alan]

Hi,

This suggests that the 'you' referred to is in some way responsible for the death(s) of someone or other people. You could refer this to a dictator who has ordered the killing of others but has not personally carried out the killing.

Alan
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English as a Second Language
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[Tata_Y2000]

Alan, Really thank you so much.