There's too many factors when it comes to the wage gap, from a man being more likely to negotiate for a higher wage, to men dominating dangerous professions that typically pay higher salaries.
The media definitely overplays this making it sound far worse than it is.
Example >
https://www-nbcnews-com.cdn.ampproject.org/v/s/www.nbcnews.com/news/amp/ncna941626?amp_js_v=a2&_gsa=1&usqp=mq331AQECAFYAQ%3D%3D#aoh=15460334790181&_ct=1546033500546&referrer=https%3A%2F%2Fwww.google.com&_tf=From%20%251%24s&share=https%3A%2F%2Fwww.nbcnews.com%2Fbusiness%2Fbusiness-news%2Fgender-pay-gap-worse-thought-study-shows-women-actually-earn-n941626Now dismissing it as definitely not existing, is a lie in and of itself, but I do not believe that that women are paid less, just because that are women. There are some examples for sure, but among there being laws set to protect from wage discrimination, there is also initiative to mitigate the gap in large businesses, wherever possible.
With all that, we still haven't closed the gap, and chances are a a gap will always exist.