Well, let's take a look at that question. We can compare killings by extremists of the left and right:
Right-wing terrorism is once again responsible for more deaths on U.S. soil (107) than jihadi terrorism (104) since 9/11, according to data collected by New America. (In fact, right-wing violence had been responsible for more deaths for most of this period, but jihadis had been responsible for more since the Pulse nightclub shooting of 2016.)
Patrick Crusius’ attack itself was especially bloody, the most lethal right-wing attack since Timothy McVeigh’s bombing of the Alfred P. Murrah Federal Building in Oklahoma City in 1995, which killed 168 people. But the El Paso killings were a continuation of a bloody series of attacks in recent years, including the Tree of Life synagogue shooting in Pittsburgh in 2018 and the 2015 attack on a historic black church in Charleston, South Carolina, which killed 11 and nine people, respectively. And such high-profile attacks are few compared with regular incidents of low-level harassment and violence against blacks, Jews, Muslims, and other minorities.
No single factor explains the recent rise of right-wing violence, which has a long and bloody history in the United States, mostly directed against black Americans. It’s not that the causes themselves have changed dramatically. Many Americans have long been concerned about immigration, opposed to gun control, and critical of protections for minorities. Most of those who hold these beliefs would condemn violence and those who use it.
But right-wing terrorism itself is changing. Part of it is 9/11 itself. The attacks highlighted fears of Muslims and gave far-right groups more credibility in their claims to be defending Christian civilization. Each jihadi attack, including highly publicized attacks abroad like the 2015 Paris killings by ISIS, bolstered their claim and created a cycle of recruitment and radicalization.
The rise of Trump both reflected the greater radicalization of right-wing voices and heightened it. Trump rode to power in part on anti-immigrant and racist sentiments. At the same time, he elevated these concerns, with a regular track record of racist statements and hostility to Mexicans and other immigrants. Many white supremacists embraced Trump. Radicalization expert J.M. Berger found that the top hashtag for the alt-right is #MAGA.
https://slate.com/news-and-politics...ernment-focus-jihadis-islamic-radicalism.html
Anti-fascists linked to zero murders in the US in 25 years
As Trump rails against ‘far-left’ fascism, new database shows leftwing attacks have left far fewer people dead than violence by rightwing extremists
https://www.theguardian.com/world/2...mists-attacks-deaths-database-leftwing-antifa
I'll see if there's good data on political hate crimes other than killings. Given these data, I'd say you were wrong.