I agree that references are nice. But then if someone is pushing an agenda it's easy for them to cherry pick the URLs they provide. So even if someone does provide references it's probably a good idea to use a search engine to check.

Milk 2008: (https://en.wikipedia.org/wiki/2008_Chinese_milk_scandal) (http://news.bbc.co.uk/1/hi/world/asia-pacific/7614083.stm)

Milk 2010: (http://online.wsj.com/article/SB126255525849313997.html)

Milk 2013: (http://www.bbc.co.uk/news/business-22088977)

Glow in dark pork: (http://www.telegraph.co.uk/news/worldnews/asia/china/8544851...)

Waste oil from gutters outside restaurants repackaged and sold for consumption: (http://www.telegraph.co.uk/news/worldnews/asia/china/7971983...)