A stated core purpose of the second amendment is for ordinary people to be able to keep a government in check by force or threat of force.
Some people view the actions of ICE, like in this article, to be crossing a line that would normally provoke a response from second amendment types.
Those people are the people who want gun control and therefore don’t have any guns.
The people who would normally argue "but muh 2A!" are either applying to be on ICE, are on ICE, or just support what they're doing, completely oblivious to the obvious.