Prager is right on many counts. What he means is that we are in a national conflict over the future of our country. The Left and the Democrats (pretty much the same thing) have their agenda. If we oppose that agenda, then we must engage ourselves through all legitimate means to do something about it. And we must not give up.
The Social(ist) Democrats are more than willing to use force, ie, MURDER, to advance their agenda. How willing are we to resist with force as well?
A couple of points of clarification -
1) when using the force of government, the inherent threat of killing the non-compliant is always there.
2) “more than willing” - most leftists get a big ol’ stiffy at the thought of using the guns of government to punish and kill their ideological opponents.