Johnson built his career on community policing ... I want them to say that, you know, ‘Calvin was part of a group of individuals that pushed Tampa forward.'" ...

Former Detroit Lions wide receiver Calvin Johnson received the nickname "Megatron" from former Lion Roy Williams, courtesy of his machine-like dominance.

Losing Ben Johnson and Aaron Glenn will NOT be the end of the Lions ... at least, that's what Calvin Johnson is saying -- as the Detroit legend tells TMZ Sports he's confident his squad will recover.