I compare the existence of God to that of love
we can't physically see love, but we know that it exists
we see people in love, we observe selfless acts of love, and most of all, we feel love
the same is true of God
even though we can't see Him standing in front of us does not mean He does not exist
you can see God in the beauty of His creations, the complexities of the universe, people using their God-given talents to make beautiful things and improve the lives of others . . . but most importantly, you can feel God too if you open yourself to Him and allow Him into your life
unfortunately, watching videos of extreme violence and people dying can make all of that quite difficult . . .
Now replace god with ghost or invisible unicorn.