Silicon Valley will face new challenges in 2020. Here's what we're watching.

Over the last decade, lawmakers and regulators slowly woke up to the consequences of the tech industry’s unchecked rise in power. In the 2020s, they'll try to take back control. Here are (some) of the top issues the Washington Post will tracking at The Technology 202 in 2020:

1. Tech companies will grapple with their responsibility to separate fact from fiction online — especially during a closely watched presidential election cycle.
2. Disinformation tactics will evolve as Silicon Valley invests heavily to avoid a repeat of the 2016 election.  
3. CA’s new privacy law took effect on Jan. 1, and other states will consider adopting their own data-collection restrictions in the absence of federal action. 
4. Tech giants’ power and size will be under the microscope as antitrust investigations heat up at the federal and state level.  
5. The industry’s treatment of contract workers will face a reckoning — starting with a law targeting gig-economy workers known as AB5 in CA.