What should you do if people accuse you for doing something you didn’t do? ?

Ok this is a Hard one, I got through this a lot. What i do is i just take my time and let them figure out that you didn't do it, You want to give good evidence   that you didn't do it. Now if you got accused of something big, you should talk to a friend maybe he was there and he could tell everyone that you didn't do it. They do these things in court ( They are Similar).

this is b. how railways dealt with people riding the trains without paying

oka

i think i seen this before