There were early attacks that don't stand out, such as Sad Puppies event that exposed the mainstream Science Fiction writing organizations as frauds. Plus some nasty reveals of some famous authors either being involved in or not covering for pedos in the community.

And DongleGate which revealed the soft underbelly of the programming community which has had SJWs successfully gut meritocracy in much of the OSS world. Ended up destroy our local Python user group after a trans-person caused drama. (I went on to deal with more difficult technologies with less infiltration due to higher IQ and work barriers...)

There were also the grifters that got control of the NRA, but that was a money grab. Other groups are routing around that damage.

There was a small push against amateur radio, but due to it's nature, it has continued dying out with the same old men for the last 60 years. :P