Recently, a video was posted online from a Christian Pastor, Steven Anderson, in which he not only bashes and insults Sikhism, but also other faiths. Anderson's video: https://www.youtube.com/watch?v=_5OWC7T_nbM
Simer Singh has provided a rebuttal consisting of Gurbani lines and intelligent points of proof, showing that Anderson's sermon is inaccurate and indeed insulting.
Simer's video: https://www.youtube.com/watch?v=Kc4OH3x-y-k&feature=youtu.be
While everyone is entitled to their own opinion and should be allowed to practice whatever religion they choose, this does not mean that an individual has the right to bash and sling false accusations to prove their own point.
Simer Singh discusses only facts and concepts from a Sikhi stand point. Please take the time out to watch both videos and share with others. The only way to respond to anyone challenging your faith, is with love and fact!