Well, wow. You sure look like you know the deepest truths of the universe, yet you act like barbarians. You also seem sure to be on the right side of history at all time and for that I envy you, really.
Honestly, even though I live thousands of miles far from you, I'm growing to find unbearable this hateful behaviour of yours and I hope it doesn't take traction here. Also, in my opinion, with mindless and disrespectful acts such as these, you're only feeding a grain of hate and tensions that's already big enough in your country right now; please hope most people don't care.
My take: sure, tearing down a statue does not erase history, but how does that condone the vandalism act itself? It's not ok just because it's you who's doing it, you know. It's like a "I'm not racist / violent but.." pattern.
You see these statues as a glorification of what they represent, I slightly disagree. If every ink drop and brush stroke are like words in a very long book that narrates your story, then every statue or monument erected to represent a person or a very significant event is like a bookmark or a new chapter. Like it or not, Columbus was important and George Washington a lot more. Every country in the world probably had a madman at one point who turned the helm and shaped the cultural future of thousands or even millions, deal with it because history is not a fairy tale and it's not a democracy either.
If you'd like to move it in a museum then ask for it, you'll get the support of a lot more people who are now against you, but to act like ignorant barbarians and feeling like heroes because "it's hate history" is outstandingly stupid, simplistic and quite irritating. It's like ripping off key pages from a book titled "The History of our Culture: Who We Are And Why We Are Here (ongoing until Skynet)": while you may not give a flying damn, it's worth more than gold for the generations to come.