One can point to any number of examples which demonstrate otherwise, most prominent during the Trump administration being concentration camps for migrant children and the right's unwavering support of police following George Floyd's murder. They certainly support human rights for white Christians in particular, but beyond that their record speaks to the opposite.
You're talking about neoliberalism, which is a right-wing ideology. By global standards, the US does not have a leftist party, as both parties fully embrace the capitalist mindset. Bernie Sanders is the closest any American politician comes to being a leftist, and he was rejected by the establishment twice precisely because he rubs Democrats' corporate/big pharma donors the wrong way.