 Green patrolled Oxford Street in the West End for 25 years , from 1968 until 1993 , with a placard recommending " protein wisdom " , a low @-@ protein diet that he said would dampen the libido and make people kinder . His 14 @-@ page pamphlet , Eight Passion Proteins with Care , sold 87 @,@ 000 copies over 20 years . 
 Green patrolled Oxford Street in the West End for 25 years , from 1968 until 1993 , with a placard recommending " protein wisdom " , a low @-@ protein diet that he said would dampen the libido and make people kinder . His 14 @-@ page pamphlet , Eight Passion Proteins with Care , sold 87 @,@ 000 copies over 20 years . 
Green patrolled Oxford Street in the West End for 25 years , from 1968 until 1993 , w/ a placard recommending " protein wisdom " , a low @-@ protein diet that he said would dampen da libido and make people kinder . His 14 @-@ page pamphlet , Eight Passion Proteins with Care , sold 87 @,@ 000 copies over 20 yrs .