What is International Men's Day and why is it celebrated?

Article here. Excerpt:

'Today is International Men's Day (IMD). While most of us have heard of and may celebrate International Women's Day (IWD) on March 8 every year, many will not know that there's also the equivalent awareness day for men. The aim is to celebrate male cultural, political and socioeconomic achievements, while also shining a light on the issues that half of the population face.

IMD was created just over a decade ago, in order to give men an equivalent to the century-old IWD, but some are opposed to the idea of a day dedicated to celebrating men, arguing that it in some way waters down the female awareness day, which continues to shine a light on the very real problem of gender inequality. Others, however, fully respect the importance of IMD in addressing the issues facing men that need highlighting.'