http://colinholbrook.com/Holbrook_Neuromodulating_Ideology_SCAN_2015.pdf (from his page at UCLA):

As has been done in similar ways in prior studies employing this measure of intergroup bias (McGregor et al., 1998; Greenberg et al., 2001; Navarrete et al., 2004; Holbrook et al., 2011), to ensure that participants would respond aversively to a Latino immigrant’s criticisms of the USA, those who identified as ‘extremely liberal’ or as non-US citizens were excluded from participating, and four individuals who self-identified as ‘Hispanic/Latino’ after participating were dropped prior to analysis. 2 The final sample consisted of 38 participants (58% female, M age = 20.9 years, s.d. = 2.67). About 36.8% of the participants identified as White, 36.8% as East Asian, 13.2% as South Asian, 7.9% as Middle Eastern and 5.3% as Other. As intended, the sample was politically moderate (M = 4.68, s.d. = 1.51; 1 = ‘Extremely Liberal’; 5 =‘Moderate’; 9 = ‘Extremely Conservative’).


So the answer is to be extremely liberal and you'll be protected.

;-)

Cheers,
Scott.