People are confused about left and right these days, because there's been a ruling right-wing class for four decades that has muddied the waters. Trump is right-wing, to be sure. So was Obama. So was Hillary Clinton. So was Bill Clinton. So was George Bush. So was Al Gore. The US, and all western nations, have had right-wing ruling classes for four decades. An element of that ruling class passed themselves off as "the left" or as "progressives." They weren't. Left and right are economic issues. All reasonable human beings are anti-racists, are anti-sexist, and generally oppose discrimination based upon arbitrary characteristics of human beings. If a person is racist, or a sexist, that person is a troglodyte. The left opposes troglodytes attempting to use their bigotry to advance their political economic agendas (enrichment of capital's owners and managers at the expense of working people). The left also opposes people opposing troglodytes for the purposes of advancing that very same economic agenda of advancing capital's owners and managers and working people's expense. The problem with "centrist" or "moderate" or "Third Way" Democrats (what has come to be associated with "the left") is that they have exploited the bigotry on the right to advance their own right-wing economic agendas, i.e., their service of Wall Street. This is what is called "identity politics" in the mainstream.
So what is the (real) left? It most certainly is anti-racist and anti-sexist. But it is also pro-labor. You can't have a left without labor and without an understanding of class issues. The left defends the interests of working people at the expense of capital's owners and managers.