http://www.slate.com/articles/life/drink/2015/07/craft_beer_sexism_labels_like_raging_bitch_and_happy_ending_only_alienate.html

1978 was the worst year for beer diversity in post-Prohibition America, with only 89 breweries operating in the entire country. Most of those breweries sucked, so a nation addled by other drugs might not have realized that things were starting to look up. President Carter decriminalized home-brewing that year, empowering a generation of garage-based drinkers and dreamers to develop their own recipes and techniques. A lot of these hobbyists eventually went pro, leading to the well-chronicled rise of craft beer.