Pop culture is largely defined as something liked by a mainstream audience, perhaps with the help of mass media. Many aspects of this thought are true, such a music, fashion, and ideas. Mass media shows what they want to be or can make popular; it's as if the audience can't decide what we like anymore.
Owned by big corporation with their own prosperity in mind, mass media has truly become a part of our lives in any way possible, but the internet has given us the choice to to once again decide what we like.
A great example is YouTube. Originally a way to upload user content, it has some what been taken over by mass media corporations such as Vevo, but it has also been a great tool to share information, and normal people to share their thoughts and creativeness.
It does offer everyone a means to share their thought, though sometimes it'd be better for those people to not share anything, such as the case of Alexandra Wallace, a stupid girl who attended UCLA and made some racist comment on YouTube against Asians. While that's not good, many people replied to her video with their own opinions. A very funny and creative reply was by an aspiring comedian David So. A very funny individual who was given the opportunity to make people laugh through YouTube.
While pop culture is not always a bad thing, we can't let it decide our thoughts, we have to be the ones to decide it.