POLITICAL VIOLENCE“This Will Not End Here”: A Scholar Explains Why Charlie Kirk’s Killing Could Embolden Political Violence

By Arie Perliger

Published 11 September 2025

“Political assassinations come in waves. We see that not only in the United States but other countries. I’ve looked at political assassinations in many democracies, and one of the things I see in a fairly consistent manner is that political assassinations create a process of escalation that encourages others on the extreme political spectrum to feel the need to retaliate. And that is my main concern,” says University of Massachusetts Lowell scholar Arie Perliger, who studies political violence and assassinations.

The fatal shooting of prominent conservative activist Charlie Kirk on Sept. 10, 2025, has brought renewed attention to the climate of political violence in America. Kirk’s death reflects a sizable increase in threats against officeholders and politicians at the local and federal level.

Alfonso Serrano, a politics editor at The Conversation, spoke with University of Massachusetts Lowell scholar Arie Perliger after Kirk’s shooting. Perliger studies political violence and assassinations and spoke bluntly about political polarization in the United States.

Serrano: What were your initial thoughts after Charlie Kirk’s fatal shooting?
Perliger
: It was a bit unusual that the attack was not against an elected official. Rarely have we seen political assassinations that are aimed at the nonprofit political landscape. Usually those people are not deemed important enough.

Secondly, and it’s something I see a lot in my research, political assassinations come in waves. We see that not only in the United States but other countries. I’ve looked at political assassinations in many democracies, and one of the things I see in a fairly consistent manner is that political assassinations create a process of escalation that encourages others on the extreme political spectrum to feel the need to retaliate. And that is my main concern. That this process creates legitimization and acceptance, that it provides the sense that this is an acceptable form of political action. This will not end here.

In 2024, there were two attempts to assassinate Donald Trump. Then, in early 2025, the residence of Gov. Josh Shapiro in Pennsylvania was firebombed on Passover, and within months the U.S. witnessed the killing of Minnesota state lawmaker Melissa Hortman and her husband, among other acts of political violence. The U.S., of course, is not immune to political violence, as we saw in the 1960s. But what stands out about this latest wave?
The data shows that there’s a substantial increase in the level of threats against officeholders at the local and federal level. What’s different now is we see an increased support in political violence from both sides of the political spectrum. Consistently, almost a quarter of the public is willing to support political violence in some form, or see that as a legitimate form of political action.