It would be everybody who committed a fire arms offence from a murder to an unintentional discharge. And then you would have to consider not everybody gets caught.
One of the definitions of many was a majority one wasn't and the one you went for seems to be in different context.
determiner, pronoun, & adjective
- 1.
a large number of.
"many people agreed with her"
synonyms: numerous, a great/good deal of, a lot of, a large/great number of, great quantities of, plenty of, countless,innumerable, scores of, crowds of, droves of, an army of, a horde of, a multitude of, a multiplicity of,multitudinous, numberless, multiple, untold;More
noun
- 1.
the majority of people.
"music for the many"
synonyms: the people, the common people, the masses, the multitude, the majority, the populace, the public, the rank and file, the crowd, the commonalty, the commonality;
Let's suggest even 1% of fifty million can be defined as many.
And to try and keep this subject on track. Let's also suggest that people are not automatically proficient and responsible with a gun and that if you were to use one in self defence it would be better t work at becoming proficient and responsible.