The ruling classes get to put up the statues.
Churchill is considered a great man of history in the UK (no.1, I believe) because he won the war. Full stop. End of.
Here in Finland Field Marshall Mannerheim is idolised with his certificates framed and hung up in every church and cathedral, streets and lodges are named after him. If he were alive today, he would be considered an ultra-conservative right wing **** who oppressed the socialists. Indeed, at the end of his life he was moving from country to country, dying in Switzerland, to evade all the vigilantes of every shade after him. But hey, he got the Russkies and the Jerries out of our country, so he is a hero.
Having said that, until recently, he had his own Finnish Flag Day, Marsalka Day and there has been a modern day concession in that its name has been changed to Defence Forces Day, the flag day was just the other week.
However, try to pull down his statues and you'll have an angry mob after you.