They do appear to be a far-left terrorist organization. 

https://en.wikipedia.org/wiki/Jane%27s_Revenge

"Jane's Revenge is an American far-left terrorist organization, which has perpetrated and threatened domestic terror attacks in the name of defending abortion rights.[1][2][3][4] The group has committed acts of firebombing, vandalism, and arson.[2] The group was formed in 2022 in response to the leak of a possible Supreme Court ruling overturning Roe v. Wade."

But in defense of the DOJ, they were formed in 2022.  So, the DOJ has not had a whole lot of time to ramp up an investigation.  And it's only been since May 11 that they carried out their first act of domestic terrorism.  So it might be a bit premature to say there's any sort of "double standard" as Ronster alleges.

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