They ‘euthanized’ aka murdered, a disabled 7 year old in Belgium by lethal injection. Find out what they used on the kid and give him an adult sized dose. Liberals will still be horrified because they only want to kill the innocent.
Then just before the execution, have a writ declaring him factually innocent. Then execute him. That should satisfy the liberals. After the execution, shred the declaration as it of no further use.