To find suggested databases and resources on controversial issues, use the Research Guides Controversial Issues and Opinions, Opinions: How to Find Them. Both of these Research Guides will provide search strategies with a list of online and print resources that offer different viewpoints available via the TCC Library.
Beyond the library databases, the online website AllSides offers a Red Blue translator that is an alphabetical list of political topics/words. It offers a definition of controversial terms that may be helpful in your research.
This video has some tips on where to find sources as well: