No, He didn't.
The first European to arrive in the Americas was likely Eric the Red, in around 985CE; although some evidence suggests Europeans may have reached Labrador as early as 3500BCE, using dugout canoes, and there are reportedly Roman shipwrecks in North America, although there is no evidence that they were crewed when they arrived there.
And of course there were already people in the Americas at the time, whose ancestors walked across the Bering Land Bridge.
Of course, that alone puts him in radical left-wing crosshairs, because discovery of America meant spread of Western culture, and modern-day leftitsts just love to hate Western culture.
This is nonsense. The reasons for people to dislike Columbus are numerous, and mere discovery of America is irrelevant to his well known crimes.
And since this monument was >200 years old, there is also no excuse that it is not historic enough.
LOL Only an American would suggest that >200 years old is 'historic'. I grew up in a house that's older than that, and it was a perfectly ordinary house, not some 'historic' structure.
The alt-left is the true American Taliban - destroying all monuments that go against their world view. They also have in common that they both just love Islam.
Oh do fuck off.
This OP is symptomatic of the deep problem the American Right has with reality - not one thing here is actually true in any sense, but the poster genuinely believes it, despite having made no attempt to check any of it; And he views any attempt to correct his gross errors of fact as being ploitically motivated and unworthy of his consideration.
Facts exist. Reality is qualitatively different from opinion. You are NOT entitled to believe any old shit; This OP is deeply and worryingly WRONG, and this shit needs to stop before it fucks everything up any more than it already has.
Columbus has been widely condemned by those people who give a shit about reality, and choose not to believe in myth and legend, for (at least) many decades. He was a scumbag slaver piece of shit; The only reason for an American not to know this is to be deliberately averse to factual information.
There is no such thing as the 'alt-left'; and the people who are 'going after' Columbus remain, as they have always been, those who know the actual facts about who Columbus was. Like this guy:
http://theoatmeal.com/comics/columbus_day, who drew this strip in 2013, LONG (about three years) before anyone had ever coined the term 'alt-left' (the first use of which I can find
reference to was in August 2016 on the WorldNetDaily conspiracist website). And who even provided citations for his claims at the end of the strip - almost as though it was important not to just believe any old crap that someone decides to present on the Internet.
Misinformation is being used to advance the local, short-term agendas of people who don't give a shit about the long-term global results. It needs to stop. Opinions are not all worthy, nor are they all equal. Expertise is valuable; Facts are real and objective. Reality is NOT subject to our demands, wishes, desires, or wants, and cannot be shaped by what we believe.
Fucking STOP IT.