Cool. I'm sure that if a stranger murders someone you love and claims that your loved one was molesting an infant, you'd support them in their trial, too. After all, the accusation is all that matters. The story notes that he was acting on a mere belief, "whether it was true or not".
Yes...the headline (or, rather, the commentary to the headline) for this thread is quite misleading. The lawyer/father accused of murdering his neighbor did not "learn that the man had molested his young daughter." He was told, by his wife, that the man was molesting their daughter. Nothing yet has been reported as to where the wife received this information.
Who knows...maybe the deceased and the lawyer's wife were having an affair and the deceased tried to break it off, so the lawyer's wife accused him of molesting the daughter just to see the deceased get arrested.
That, of course, is just speculation. I'm not basing that speculation on any facts or evidence - just like everyone else here ready to acquit the lawyer.