"Blood on his hands" is a standard English idiom used very widely, it has no anti-semitic connotations or blood libel connotations.
Tony Blair has 'blood on his hands', says father of killed soldier
Peter Brierley, whose son Lance Corporal Shaun Brierley was killed in Iraq in 2003, has accused Tony Blair, the former Prime Minister of having "blood on his hands".
Mr Blair, who has repeatedly defended his decision to lead Britain into the conflict, was rebuked by Mr Brierley at a reception for guests who attended a commemoration service marking the end of the Iraq campaign and honouring the 179 British personnel who died during the six-year conflict.
Mr Brierley refused to shake Mr Blair's outstretched hand at the event staged at the Guildhall in the City and told the politician: "I'm not shaking your hand, you've got blood on it."
Mr Blair was ushered away and afterwards Mr Brierley, from Batley, West Yorkshire, said: "I understand soldiers go to war and die but they have to go to war for a good reason and be properly equipped to fight.
"I believe Tony Blair is a war criminal. I can't bear to be in the same room as him. I can't believe he's been allowed to come to this reception.
"I believe he's got the blood of my son and all of the other men and women who died out there on his hands."
www.telegraph.co.uk/news/worldnews/middleeast/iraq/6286081/Tony-Blair-has-blood-on-his-hands-says-father-of-killed-soldier.html