Appealing to the reptilian part of the brain isn't the same as giving a voice to the middle and working class. Walkers' tactics are called 'divide and conquer' (he acknowledged so himself). They are the same tactics used by regressives all over the nation to pit the young against the old (lie: "SS won't be around when you get to retire"), the public employee against the private employee (lie: "public workers earn too much and we can get them to do the same job for less"), nationals against immigrants (lie: "illegals steal your jobs and bleed the safety net dry"), union workers against non-union workers (lie: "union thugs are paid too much"), etc.
"First, they came for _____, and I did not speak out, then they came for ____, and I did not speak out, etc .."