http://www.slate.com/articles/arts/culturebox/2013/09/breaking_bad_finale_is_poised_to_echo_the_great_fx_show_the_shield.html

There are certain parallels between the two critically acclaimed shows, notes Mark Peters. "In many ways, 'The Shield' was 'Breaking Bad' before 'Breaking Bad.'"
Read more at http://www.hitfix.com/tv-tattle#d0xhfQhRv0BbELJz.99