was John Lennon considered to be a subversive figure?

[freepcrusher]

if I recall Strom Thurmond attempted to get John Lennon deported out of the country around 1972. Even then, there was some fear (especially in conservative circles) of foreign subversives who would try to incite agitation (this fear dates back to the 20s). Although he had echoed some anarchic statements, was he really that much of a threat to be singled out?