To both Republican talking points there are solid objective answers. Western countries need immigration (age pyramid and who wants the immigrants necessary low paid jobs) and inflation (regulate price gouging).
But the old fascist receipe ("Problem? Violence!") is simpler and triggers instincts. Instincts tend to win over logic and reason. That violence never solved anything and only makes things worse... is common knowledge, easily forgotten, it only gets remembered when it's too late.