As the world's oldest millennial I have some feelings about this. Read "Days of Rage" about the SLA, Weather Underground, Panthers, etc. - basically left-wing terrorists in the early 70s. It covers what led to this and why: essentially it was all a protest against police brutality and terrorism aimed at black Americans throughout, well, all of history. I really had no idea how prevalent bombings were — all these anecdotes about legitimate bomb threats, bank bombings, multiple bombings on some days, people going right back to work after bombings — which seems just insane. While some of the people involved come across as "brave" insurrectionists against pig anerikkka, most seem quite unwell mentally, and not very smart to be honest. They certainly suffered from lack of democratic communication means, a dearth of information, and less worldliness than leftist activists working today.
By contrast, most of the people with whom I organize are younger than me (college leftist chapters and mostly twentysomethings), but they mostly eschew the whole iphone thing (most could not afford a smartphone, which certainly provides them with a degree of nimbleness). Not only are they all intimidatingly smart, but I would say they have a more accurate view of the future afforded by accurate knowledge of history and a healthy imagination.
I could probably stretch this out for some time. See the "old economy Steve" meme for more information.