WASHINGTON POST FACT CHECKER: No evidence right-to-carry laws increase crime.

Notice the subtle change of subject ... from this sweeping statement
(“The facts are every time guns have been allowed, concealed-carry has been allowed, the crime rate has gone down.”) to the contra-positive (" it appears such laws have not increased the crime rate....").

An honest assessment would have been that there is no definitive evidence to support such a sweeping assertion. Similarly, the available evidence does not support the contrary assertion. At best the data are inconsistent the assertions.