“A study published in February in Political Psychology reported that “political identity outweighs all other social identities in informing citizens’ attitudes and projected behaviors towards others.” The results echoed those from similar research from Stanford University in 2017 which found that “the strongest attachment…is Americans’ connection to their political party. And the strength of that partisan bond – stronger than race, religion or ethnicity – has amplified the level of political polarization in the U.S.””
https://reason.com/2025/06/23/political-violence-surges-because-politics-matters-too-much