KTRK Houston is a TV station well-known for hard-hitting serious investigative reporting. When the station issued a memo telling journalists they could no longer knock on the doors of suspected criminals, legal and ethics experts pointed out this issue may be a lot more complex than it seems.
Here is the story I wrote for Poynter.org
Aim for the Heart: Writing, Reporting, Photojournalism, Producing, Ethics and Resources for journalists 