when a spirit of Anti-jacobinism
was predominant [in 'the populace']," meaning that Southey was consistent (as Speck's biography also suggests) in opposing the "spirit" of the mob.
The third part, 'The Aftermath: Politics, Social Order and Cultural Memory', again has three essays which examine the impact of the riots on the criminal justice system, the whole question of the public execution of some of the rioters, and 'new connections' between the riots and the anti-Jacobinism
of the 1790s.
The Reign of Terror in America: Visions of Violence from Anti-Jacobinism to Anti-Slavery, by Rachel Hope Cleves.
What was new and ultimately most significant about the anti-Jacobinism of the 1790s and beyond was that it identified internal enemies (republicans and later slaveholders), rather than external ones (Indian people and the French Jesuits), who, if left unchecked, would destabilize civil society and sink the United States into chaos.
Pitt and anti-Jacobinism
are inseparable, both because the two versions of the Anti-Jacobin enjoyed ministerial support, and because posterity has seen Pitt through Anti-Jacobin eyes.