John Brown: Murderer or Martyr?

I think that John Brown is a martyr because i’ve never seen him as a murderer, also because Brown is connected to terrorism for two events in his life, the Pottawatomie raid in the Kansas Territory in 1856 and his raid on Harpers Ferry, Virginia (now West Virginia) in 1859. Both involved violence and killing but he did it for the slaves. So i think that John Brown is a martyr.