Over 20 years, a group of parents whose children committed suicide in Golden Gate Bridge persistently advocated a solution to prevent the suicide, but faced resistance from some people who don’t want to change the landmark scenery that has unobstructed view of both Pacific Ocean and the San Francisco Bay.
A group of parents of the persons who died of suicide on the Golden Gate Bridge has been advocating for solutions persistently for two decades. However, some people oppose the solutions, arguing that the Golden Gate Bridge is an iconic landmark, offering sweeping views of the Pacific Ocean and San Francisco Bay.
A group of parents of people who committed suicide sucessfully on Golden Gate Bridge have kept advocating solutions in the past twenty years . But their propositions are boycotted by some people, who do not want to change the iconic landmark with unobstructed views of the Pacific Ocean and the San Franscico bay.
A group of parents whose children commited suiside at Golden Gate bridge have been advocating persistently a solution in the past 20 years. But some people oppose to this idea. These people don't want to change this symbolic structure from where Pacific Ocean and San Francisco valley can been viewed completely.
However, there was opposition from those who were against altering the iconic landmark, which offers sweeping views of the Pacific Ocean and San Francisco Bay.
A group of victim parents whose kids committed suicide from Golden Bridge have persistently advocated for the solutions, but were boycotted by a few people, who do not want to change the landmark that overlooks the Pacific and San Francisco bay.
【汉译英 Chinese to English】
一群在金门大桥自杀身亡者的父母二十年来坚持不懈地倡导解决方案，但遭到了一些人的抵制，这些人不想改变这座可以对太平洋和旧金山湾一览无余的标志性地标。
Notes:
(1) The installation of net was completed on Wednesday. The project cost $224M.
(2) About 2000 people have jumped to their death from the bridge since 1937.
(3) The net is made of stainless steel and is not flexible, so it will hurt a lot if someone jumps to it.
(4) If you or someone you know may be considering suicide or is in crisis, call or text 988 in the US to reach the Suicide and Crisis Lifeline.
Over 20 years, a group of parents whose children committed suicide in Golden Gate Bridge persistently advocated a solution to prevent the suicide, but faced resistance from some people who don’t want to change the landmark scenery that has unobstructed view of both Pacific Ocean and the San Francisco Bay.
一群在金门大桥自杀身亡者的父母二十年来坚持不懈地倡导解决方案，但遭到了一些人的抵制，这些人不想改变这座可以对太平洋和旧金山湾一览无余的标志性地标。
A group of parents of the persons who died of suicide on the Golden Gate Bridge has been advocating for solutions persistently for two decades. However, some people oppose the solutions, arguing that the Golden Gate Bridge is an iconic landmark, offering sweeping views of the Pacific Ocean and San Francisco Bay.
一群在金门大桥自杀身亡者的父母二十年来坚持不懈地倡导解决方案，但遭到了一些人的抵制，这些人不想改变这座可以对太平洋和旧金山湾一览无余的标志性地标。
A group of parents of people who committed suicide sucessfully on Golden Gate Bridge have kept advocating solutions in the past twenty years . But their propositions are boycotted by some people, who do not want to change the iconic landmark with unobstructed views of the Pacific Ocean and the San Franscico bay.
"oppose" may be better with past tense? I'm not quite sure about that.
I inclined to suggest using past tense for the second part of the translation, but I'm not sure if it's necessary.
一群在金门大桥自杀身亡者的父母二十年来坚持不懈地倡导解决方案，但遭到了一些人的抵制，这些人不想改变这座可以对太平洋和旧金山湾一览无余的标志性地标。
A group of parents whose children commited suiside at Golden Gate bridge have been advocating persistently a solution in the past 20 years. But some people oppose to this idea. These people don't want to change this symbolic structure from where Pacific Ocean and San Francisco valley can been viewed completely.
但遭到了一些人的抵制，这些人不想改变这座可以对太平洋和旧金山湾一览无余的标志性地标。
However, there was opposition from those who were against altering the iconic landmark, which offers sweeping views of the Pacific Ocean and San Francisco Bay.
A group of victim parents whose kids committed suicide from Golden Bridge have persistently advocated for the solutions, but were boycotted by a few people, who do not want to change the landmark that overlooks the Pacific and San Francisco bay.
"were boycotted" 和 "who do not want" 是不是应该保持一致为过去时态呢，我觉得是，当然后者用现在时态也好像可以。