To what extent was the civil right movement in 1960s America successful?

Plan of essay answer- Success= defined by popular support, media coverage and legal change. Intro- line of argument= was very successful in gaining support and media coverage, leading to legal change (however legal change was relatively slow to cause real change, but this was because of the depth of the problem to begin with)
Para 1: support-Kennedy pledged support to CRM-gained the support of white people, e.g. Washington March - many white people (including celebrities) joined-violent backlash from some whites (e.g. violence in Birmingham March) led to more media coverage and whites (esp in the north) supporting the civil rights movement
Para 2: media coverage-I have a dream speech -> still remembered today-Martin Luther King featured on cover of Time magazine-Birmingham March -> televised images of whites violently attacking peaceful black protesters -> stereotypes of blacks being 'uncivilised' was challenged
Para 3: legal change-1964 Civil Rights Act -> ended Jim Crow laws in the South-1965 Voting Rights Act -> meant black people didn't face barriers like racist literacy tests when registering to vote-still took time to enforce these acts; e.g. in the South de facto segregation in schools continued; in the north segregation due to economic difficulties continued