Ernest Medina played a role in a Vietnam War mass murder.
Tobacco packaging warning messages are warning messages that appear on the packaging of cigarettes and other tobacco products concerning their health effects .. warning messages. Warning label. tobacco products. tobacco products. health effects. Health effects of tobacco. They have been implemented in an effort to enhance the public 's awareness of the harmful effects of smoking .. In general , warnings used in different countries try to emphasize the same messages .. Warnings for some countries are listed below .. Such warnings have been required in tobacco advertising for many years .. tobacco advertising. tobacco advertising. WHO Framework Convention on Tobacco Control adopted in 2003 requires such packing warning massages to promote awareness against smoking .. WHO Framework Convention on Tobacco Control. WHO Framework Convention on Tobacco Control. A 2009 review summarises that `` There is clear evidence that tobacco package health warnings increase consumers ' knowledge about the health consequences of tobacco use . ''. The warning messages `` contribute to changing consumers ' attitudes towards tobacco use as well as changing consumers ' behaviour . ''. warning messages. Warning label. At the same time , such warning labels have been subject to criticism .. criticism. criticism. 2007 meta-analyses indicated that communications emphasizing the severity of a threat are less effective than communications focusing on susceptibility , and that warning labels may have no effect among smokers who are not confident that they can quit , which lead the authors to recommend exploring different , potentially more effective methods of behavior change .. methods of behavior change. methods of behavior change