I will answer the charge by quoting a summary of the excellent book The Tyranny of Guilt by Pascal Bruckner:

"Fascism, communism, genocide, slavery, racism, imperialism―the West has no shortage of reasons for guilt. And, indeed, since the Holocaust and the end of World War II, Europeans in particular have been consumed by remorse. But Pascal Bruckner argues that guilt has now gone too far. It has become a pathology, and even an obstacle to fighting today's atrocities. Bruckner, one of France's leading writers and public intellectuals, argues that obsessive guilt has obscured important realities. The West has no monopoly on evil, and has destroyed monsters as well as created them―leading in the abolition of slavery, renouncing colonialism, building peaceful and prosperous communities, and establishing rules and institutions that are models for the world. The West should be proud―and ready to defend itself and its values. In this, Europeans should learn from Americans, who still have sufficient self-esteem to act decisively in a world of chaos and violence. Lamenting the vice of anti-Americanism that grips so many European intellectuals, Bruckner urges a renewed transatlantic alliance, and advises Americans not to let recent foreign-policy misadventures sap their own confidence. This is a searing, provocative, and psychologically penetrating account of the crude thought and bad politics that arise from excessive bad conscience."

In other words, the West for all its faults, has led the way towards egalitarianism, emancipation, and prosperity for all. It provides equal opportunity, not equal outcome. It ended slavery while many parts of the world still have not done so. It is still common in many parts of Africa, Asia, etc. There is even human trafficking of slaves into the USA across the southern border, but it is illegal. Slavery was universal, not restricted to the pre-bellum American South, nor only to blacks; white slavery was and still is quite common. Any significant deviations from that path (e.g.,, Communism, Nazism, radical Leftism or any sort of collectivism) run contrary to the foundational principles and values that inform and animate the Western experiment, which to paraphrase Churchill is the worst system except for all the others. All we have to do is compare it to other parts of the world where dictatorships run rampant, e.g., Zimbabwe, North Korea, China. Nepotism and cronyism are inegalitarian and thus run contrary to the spirit of Western progress, which is based on results and favors meritocracy. It's not as though the Western experiment and the American Dream don't suffer setbacks. They do aplenty and must reinvent themselves to stay on track. Now, as Bruckner notes, western Europe is on the wrong track. It is allowing its society to be adversely influenced by Islamism and radical Leftism -- both inegalitarian collectivist ideologies. This is tragic. The Enlightenment principles enshrined in the US Constitution and the idea of the American Dream still, for billions, are symbolic of hope for freedom and prosperity for all, so we should not feel guilty or parade the West's errors as representative of it.