Not kill "floating face down", in the literal sense. It is a figure of speech. Of course not! At least not without a trial. Let the punishment fit the crime, but we do need a sense of justice to restore confidence. The criminals also need to be sent a message.
Richard W.
"we do need a sense of justice to restore confidence"
On the contrary, confidence produces a surfeit of mercy, a dearth of justice. Disappointment, skepticism, and fear, as reflected by falling stock prices, leads to the pursuit of justice.