Google’s in the middle of its antitrust case in just as many months, after it lost a landmark trial in August over anticompetitive search practices. This time around, the DOJ is claiming Google has another illegal monopoly in the online advertising market.  Verge senior policy reporter Lauren Feiner has been on the ground at the courthouse to hear testimony from news publishers, advertising experts, and Google executives to make sense of it — and, ultimately, to see whether a federal judge hands the company another antitrust defeat.  Links:  Google and DOJ return for round two of their antitrust fight | The Verge Judge rules that Google ‘is a monopolist’ in US antitrust case | The Verge In US v. Google, YouTube’s CEO defends the Google way The Verge Google and the DOJ’s ad tech fight is all about control | The Verge How Google altered a deal with publishers who couldn’t say no | The Verge Google dominates online ads, says antitrust trial witness, but publishers are feeling ‘stuck’ | The Verge US considers a rare antitrust move: breaking up Google | Bloomberg This deal helped turn Google into an ad powerhouse. Is that a problem? | NYT Credits:  Decoder is a production of The Verge and part of the Vox Media Podcast Network. Our producers are Kate Cox and Nick Statt. Our editor is Callie Wright. Our supervising producer is Liam James. The Decoder music is by Breakmaster Cylinder. Learn more about your ad choices. Visit podcastchoices.com/adchoices