Final answer:
The Civil Rights Movement was marked by significant personal sacrifices made by activists, including the potential for and actual loss of life, as embodied by Martin Luther King Jr.'s acknowledgment of the dangers he faced and the ultimate sacrifice of his own life. Fellow activists endured similar risks, with some, like William Moore, being killed during acts of protest.
Step-by-step explanation:
The sacrifice that Martin Luther King Jr. and others within the Civil Rights Movement were willing to make can be understood through their commitment to achieving justice and equality, often at great personal cost. Coretta Scott King, reflecting on her husband's legacy, emphasized the noble cause of the movement, reinforced by Martin Luther King Jr.'s last speech where he acknowledged the possibility of not surviving to see the fruits of their labor but remained steadfast in the belief that 'we as a people will get to the Promised Land.' This metaphor highlighted the readiness of activists to endure suffering and even sacrifice their lives, as Martin Luther King Jr. ultimately did with his assassination on April 4, 1968, for the sake of social progress and the end of segregation and racial discrimination.
The references to other individuals in the movement, like the young black man whose murder fueled the Selma to Montgomery March and William Moore's tragic death during his solitary protest march, further illustrate the high stakes and personal sacrifices inherent in the struggle for civil rights. The actions and devoted sacrifices of civil rights activists manifested not only through their rigorous marches and demonstrations but also through the dignified endurance of violence and the ultimate price some paid, losing their lives for the cause.