And how are you getting a network connection to forward over wifi while riding this bus? If the network is purely local and used to access PDFs on a server on your person, then you would need to carry all that contraband information with you (and consequently increase the risk you're taking on).
There's prior art you could follow from various resistance movements, though most of the examples of people not getting caught use long-range, broadcast signals like shortwave. You need sustained proximity to use regular wifi, and that strikes me as way less safe. The other thing to consider is that both ends of a wifi connection can be triangulated, so a broadcast signal is far safer for end users (unless it requires special equipment that is itself suspect or forbidden).
This isn't an information problem: it's a mindset problem.
The only people who are resistant to authoritarian propaganda and misinformation are those who are going to question everything that they're told on all topics.