nearly one in four has self-censored for fear of government surveillance
That's not exactly what the report said, and I'm just skimming the thing here.
28% have curtailed or avoided social media activities, and another 12% have seriously considered
24% have deliberately avoided certain topics in phone or email conversations, and another 9% have seriously considered it;
16% have avoided writing or speaking about a particular topic, and another 11% have seriously considered it;
16% have refrained from conducting Internet searches or visiting websites on topics that may be considered controversial or suspicious, and another 12% have seriously considered it;
13% have taken extra steps to disguise or cover their digital footprints, and another 11% have seriously considered it;
3% have declined opportunities to meet (in person, or electronically) people who might be deemed security threats by the government, and another 4% have seriously considered it.
Boiled down: about one-third of the American press are chickens, about two-thirds are not.