<a href="https://en.wikipedia.org/wiki/Cold_War" id="mwcQ" rel="mw:WikiLink" title="Cold War">Cold War</a>: The <a href="https://en.wikipedia.org/wiki/House_Un-American_Activities_Committee" id="mwcg" rel="mw:WikiLink" title="House Un-American Activities Committee">House Un-American Activities Committee</a> begins its investigation into Communist infiltration of the <a href="https://en.wikipedia.org/wiki/Cinema_of_the_United_States" id="mwcw" rel="mw:WikiLink" title="Cinema of the United States">Hollywood film industry</a>, resulting in <a href="https://en.wikipedia.org/wiki/Hollywood_blacklist" id="mwdA" rel="mw:WikiLink" title="Hollywood blacklist">a blacklist</a> that prevents some from working in the industry for years.